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Finding the Fourth Proportional to 658,318.84, 908,461.38 and 390,046.84

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Solution

The fourth proportional to 658,318.84, 908,461.38 and 390,046.84 is: 538,253.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,318.84 : 908,461.38 = 390,046.84 : x
  2. Step 2: Convert to fraction form
    658,318.84/908,461.38 = 390,046.84/x
  3. Step 3: Cross multiply
    658,318.84x = 908,461.38 × 390,046.84
  4. Step 4: Simplify right side
    658,318.84x = 354,342,490,531.04
  5. Step 5: Solve for x
    x = 354,342,490,531.04/658,318.84
  6. Step 6: Final answer
    x = 538,253.61

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.