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Finding the Fourth Proportional to 638,470.60, 957,705.90 and 372,531.40

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Solution

The fourth proportional to 638,470.60, 957,705.90 and 372,531.40 is: 558,797.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,470.60 : 957,705.90 = 372,531.40 : x
  2. Step 2: Convert to fraction form
    638,470.60/957,705.90 = 372,531.40/x
  3. Step 3: Cross multiply
    638,470.60x = 957,705.90 × 372,531.40
  4. Step 4: Simplify right side
    638,470.60x = 356,775,519,715.26
  5. Step 5: Solve for x
    x = 356,775,519,715.26/638,470.60
  6. Step 6: Final answer
    x = 558,797.10

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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.