Home / 818,428.68-1,129,488.36-496,152.36

Finding the Fourth Proportional to 818,428.68, 1,129,488.36 and 496,152.36

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Solution

The fourth proportional to 818,428.68, 1,129,488.36 and 496,152.36 is: 684,724.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,428.68 : 1,129,488.36 = 496,152.36 : x
  2. Step 2: Convert to fraction form
    818,428.68/1,129,488.36 = 496,152.36/x
  3. Step 3: Cross multiply
    818,428.68x = 1,129,488.36 × 496,152.36
  4. Step 4: Simplify right side
    818,428.68x = 560,398,315,406.53
  5. Step 5: Solve for x
    x = 560,398,315,406.53/818,428.68
  6. Step 6: Final answer
    x = 684,724.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.