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Finding the Fourth Proportional to 615,691.59, 923,537.33 and 312,038.45

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Solution

The fourth proportional to 615,691.59, 923,537.33 and 312,038.45 is: 468,057.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,691.59 : 923,537.33 = 312,038.45 : x
  2. Step 2: Convert to fraction form
    615,691.59/923,537.33 = 312,038.45/x
  3. Step 3: Cross multiply
    615,691.59x = 923,537.33 × 312,038.45
  4. Step 4: Simplify right side
    615,691.59x = 288,179,156,970.34
  5. Step 5: Solve for x
    x = 288,179,156,970.34/615,691.59
  6. Step 6: Final answer
    x = 468,057.65

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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.