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Finding the Fourth Proportional to 521,470.48, 780,882.56 and 437,008.54

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Solution

The fourth proportional to 521,470.48, 780,882.56 and 437,008.54 is: 654,403.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,470.48 : 780,882.56 = 437,008.54 : x
  2. Step 2: Convert to fraction form
    521,470.48/780,882.56 = 437,008.54/x
  3. Step 3: Cross multiply
    521,470.48x = 780,882.56 × 437,008.54
  4. Step 4: Simplify right side
    521,470.48x = 341,252,347,457.06
  5. Step 5: Solve for x
    x = 341,252,347,457.06/521,470.48
  6. Step 6: Final answer
    x = 654,403.96

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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.