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Finding the Fourth Proportional to 658,500.84, 908,712.56 and 386,564.40

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Solution

The fourth proportional to 658,500.84, 908,712.56 and 386,564.40 is: 533,447.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,500.84 : 908,712.56 = 386,564.40 : x
  2. Step 2: Convert to fraction form
    658,500.84/908,712.56 = 386,564.40/x
  3. Step 3: Cross multiply
    658,500.84x = 908,712.56 × 386,564.40
  4. Step 4: Simplify right side
    658,500.84x = 351,275,923,596.04
  5. Step 5: Solve for x
    x = 351,275,923,596.04/658,500.84
  6. Step 6: Final answer
    x = 533,447.95

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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.