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Finding the Fourth Proportional to 461,487.68, 636,606.24 and 318,318.56

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Solution

The fourth proportional to 461,487.68, 636,606.24 and 318,318.56 is: 439,109.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,487.68 : 636,606.24 = 318,318.56 : x
  2. Step 2: Convert to fraction form
    461,487.68/636,606.24 = 318,318.56/x
  3. Step 3: Cross multiply
    461,487.68x = 636,606.24 × 318,318.56
  4. Step 4: Simplify right side
    461,487.68x = 202,643,581,603.81
  5. Step 5: Solve for x
    x = 202,643,581,603.81/461,487.68
  6. Step 6: Final answer
    x = 439,109.41

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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.