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Finding the Fourth Proportional to 602,956.80, 903,398.40 and 392,486.40

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Solution

The fourth proportional to 602,956.80, 903,398.40 and 392,486.40 is: 588,054.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,956.80 : 903,398.40 = 392,486.40 : x
  2. Step 2: Convert to fraction form
    602,956.80/903,398.40 = 392,486.40/x
  3. Step 3: Cross multiply
    602,956.80x = 903,398.40 × 392,486.40
  4. Step 4: Simplify right side
    602,956.80x = 354,571,585,781.76
  5. Step 5: Solve for x
    x = 354,571,585,781.76/602,956.80
  6. Step 6: Final answer
    x = 588,054.71

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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.