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Finding the Fourth Proportional to 605,087.80, 907,631.70 and 437,126.20

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Solution

The fourth proportional to 605,087.80, 907,631.70 and 437,126.20 is: 655,689.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,087.80 : 907,631.70 = 437,126.20 : x
  2. Step 2: Convert to fraction form
    605,087.80/907,631.70 = 437,126.20/x
  3. Step 3: Cross multiply
    605,087.80x = 907,631.70 × 437,126.20
  4. Step 4: Simplify right side
    605,087.80x = 396,749,596,020.54
  5. Step 5: Solve for x
    x = 396,749,596,020.54/605,087.80
  6. Step 6: Final answer
    x = 655,689.30

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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.