Home / 781,517.15-1,078,551.62-437,387.57

Finding the Fourth Proportional to 781,517.15, 1,078,551.62 and 437,387.57

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Solution

The fourth proportional to 781,517.15, 1,078,551.62 and 437,387.57 is: 603,627.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,517.15 : 1,078,551.62 = 437,387.57 : x
  2. Step 2: Convert to fraction form
    781,517.15/1,078,551.62 = 437,387.57/x
  3. Step 3: Cross multiply
    781,517.15x = 1,078,551.62 × 437,387.57
  4. Step 4: Simplify right side
    781,517.15x = 471,745,072,191.36
  5. Step 5: Solve for x
    x = 471,745,072,191.36/781,517.15
  6. Step 6: Final answer
    x = 603,627.28

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Double scale
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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.