Home / 1,491,036,381.70-2,236,554,572.55-509,571,142.90

Finding the Fourth Proportional to 1,491,036,381.70, 2,236,554,572.55 and 509,571,142.90

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Solution

The fourth proportional to 1,491,036,381.70, 2,236,554,572.55 and 509,571,142.90 is: 764,356,714.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491,036,381.70 : 2,236,554,572.55 = 509,571,142.90 : x
  2. Step 2: Convert to fraction form
    1,491,036,381.70/2,236,554,572.55 = 509,571,142.90/x
  3. Step 3: Cross multiply
    1,491,036,381.70x = 2,236,554,572.55 × 509,571,142.90
  4. Step 4: Simplify right side
    1,491,036,381.70x = 1,139,683,669,692,524,544
  5. Step 5: Solve for x
    x = 1,139,683,669,692,524,544/1,491,036,381.70
  6. Step 6: Final answer
    x = 764,356,714.35

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Half scale
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Double scale
Find fourth proportional to 1,491,036,382.70, 2,236,554,574.05 and 509,571,143.90
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.