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Finding the Fourth Proportional to 658,433.96, 908,712.60 and 371,972.50

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Solution

The fourth proportional to 658,433.96, 908,712.60 and 371,972.50 is: 513,363.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,433.96 : 908,712.60 = 371,972.50 : x
  2. Step 2: Convert to fraction form
    658,433.96/908,712.60 = 371,972.50/x
  3. Step 3: Cross multiply
    658,433.96x = 908,712.60 × 371,972.50
  4. Step 4: Simplify right side
    658,433.96x = 338,016,097,603.50
  5. Step 5: Solve for x
    x = 338,016,097,603.50/658,433.96
  6. Step 6: Final answer
    x = 513,363.71

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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.