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Finding the Fourth Proportional to 640,794.47, 961,337.49 and 341,117.15

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Solution

The fourth proportional to 640,794.47, 961,337.49 and 341,117.15 is: 511,753.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,794.47 : 961,337.49 = 341,117.15 : x
  2. Step 2: Convert to fraction form
    640,794.47/961,337.49 = 341,117.15/x
  3. Step 3: Cross multiply
    640,794.47x = 961,337.49 × 341,117.15
  4. Step 4: Simplify right side
    640,794.47x = 327,928,699,970.27
  5. Step 5: Solve for x
    x = 327,928,699,970.27/640,794.47
  6. Step 6: Final answer
    x = 511,753.33

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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.