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Finding the Fourth Proportional to 648,129.86, 894,285.64 and 372,434.46

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Solution

The fourth proportional to 648,129.86, 894,285.64 and 372,434.46 is: 513,882.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,129.86 : 894,285.64 = 372,434.46 : x
  2. Step 2: Convert to fraction form
    648,129.86/894,285.64 = 372,434.46/x
  3. Step 3: Cross multiply
    648,129.86x = 894,285.64 × 372,434.46
  4. Step 4: Simplify right side
    648,129.86x = 333,062,789,419.15
  5. Step 5: Solve for x
    x = 333,062,789,419.15/648,129.86
  6. Step 6: Final answer
    x = 513,882.80

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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.