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Finding the Fourth Proportional to 678,292.96, 936,055.96 and 372,397.68

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Solution

The fourth proportional to 678,292.96, 936,055.96 and 372,397.68 is: 513,915.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,292.96 : 936,055.96 = 372,397.68 : x
  2. Step 2: Convert to fraction form
    678,292.96/936,055.96 = 372,397.68/x
  3. Step 3: Cross multiply
    678,292.96x = 936,055.96 × 372,397.68
  4. Step 4: Simplify right side
    678,292.96x = 348,585,067,854.17
  5. Step 5: Solve for x
    x = 348,585,067,854.17/678,292.96
  6. Step 6: Final answer
    x = 513,915.21

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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.