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Finding the Fourth Proportional to 663,272.48, 915,203.96 and 372,845.40

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Solution

The fourth proportional to 663,272.48, 915,203.96 and 372,845.40 is: 514,463.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,272.48 : 915,203.96 = 372,845.40 : x
  2. Step 2: Convert to fraction form
    663,272.48/915,203.96 = 372,845.40/x
  3. Step 3: Cross multiply
    663,272.48x = 915,203.96 × 372,845.40
  4. Step 4: Simplify right side
    663,272.48x = 341,229,582,649.71
  5. Step 5: Solve for x
    x = 341,229,582,649.71/663,272.48
  6. Step 6: Final answer
    x = 514,463.65

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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.