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Finding the Fourth Proportional to 602,960.80, 903,404.40 and 392,490.40

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Solution

The fourth proportional to 602,960.80, 903,404.40 and 392,490.40 is: 588,060.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,960.80 : 903,404.40 = 392,490.40 : x
  2. Step 2: Convert to fraction form
    602,960.80/903,404.40 = 392,490.40/x
  3. Step 3: Cross multiply
    602,960.80x = 903,404.40 × 392,490.40
  4. Step 4: Simplify right side
    602,960.80x = 354,577,554,317.76
  5. Step 5: Solve for x
    x = 354,577,554,317.76/602,960.80
  6. Step 6: Final answer
    x = 588,060.71

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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.