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Finding the Fourth Proportional to 680,470.80, 939,035.76 and 425,962.32

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Solution

The fourth proportional to 680,470.80, 939,035.76 and 425,962.32 is: 587,819.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,470.80 : 939,035.76 = 425,962.32 : x
  2. Step 2: Convert to fraction form
    680,470.80/939,035.76 = 425,962.32/x
  3. Step 3: Cross multiply
    680,470.80x = 939,035.76 × 425,962.32
  4. Step 4: Simplify right side
    680,470.80x = 399,993,850,892.56
  5. Step 5: Solve for x
    x = 399,993,850,892.56/680,470.80
  6. Step 6: Final answer
    x = 587,819.27

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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.