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Finding the Fourth Proportional to 605,053.70, 907,580.55 and 521,072.90

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Solution

The fourth proportional to 605,053.70, 907,580.55 and 521,072.90 is: 781,609.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,053.70 : 907,580.55 = 521,072.90 : x
  2. Step 2: Convert to fraction form
    605,053.70/907,580.55 = 521,072.90/x
  3. Step 3: Cross multiply
    605,053.70x = 907,580.55 × 521,072.90
  4. Step 4: Simplify right side
    605,053.70x = 472,915,629,172.10
  5. Step 5: Solve for x
    x = 472,915,629,172.10/605,053.70
  6. Step 6: Final answer
    x = 781,609.35

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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.