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Finding the Fourth Proportional to 605,078.80, 907,618.20 and 437,117.20

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Solution

The fourth proportional to 605,078.80, 907,618.20 and 437,117.20 is: 655,675.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,078.80 : 907,618.20 = 437,117.20 : x
  2. Step 2: Convert to fraction form
    605,078.80/907,618.20 = 437,117.20/x
  3. Step 3: Cross multiply
    605,078.80x = 907,618.20 × 437,117.20
  4. Step 4: Simplify right side
    605,078.80x = 396,735,526,253.04
  5. Step 5: Solve for x
    x = 396,735,526,253.04/605,078.80
  6. Step 6: Final answer
    x = 655,675.80

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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.