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Finding the Fourth Proportional to 486,097.40, 670,714.23 and 279,325.85

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Solution

The fourth proportional to 486,097.40, 670,714.23 and 279,325.85 is: 385,412.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,097.40 : 670,714.23 = 279,325.85 : x
  2. Step 2: Convert to fraction form
    486,097.40/670,714.23 = 279,325.85/x
  3. Step 3: Cross multiply
    486,097.40x = 670,714.23 × 279,325.85
  4. Step 4: Simplify right side
    486,097.40x = 187,347,819,048.27
  5. Step 5: Solve for x
    x = 187,347,819,048.27/486,097.40
  6. Step 6: Final answer
    x = 385,412.10

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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.