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Finding the Fourth Proportional to 555,777.76, 766,550.19 and 478,385.13

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Solution

The fourth proportional to 555,777.76, 766,550.19 and 478,385.13 is: 659,807.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,777.76 : 766,550.19 = 478,385.13 : x
  2. Step 2: Convert to fraction form
    555,777.76/766,550.19 = 478,385.13/x
  3. Step 3: Cross multiply
    555,777.76x = 766,550.19 × 478,385.13
  4. Step 4: Simplify right side
    555,777.76x = 366,706,212,294.68
  5. Step 5: Solve for x
    x = 366,706,212,294.68/555,777.76
  6. Step 6: Final answer
    x = 659,807.28

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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.