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Finding the Fourth Proportional to 629,161.92, 868,239 and 342,681.12

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Solution

The fourth proportional to 629,161.92, 868,239 and 342,681.12 is: 472,897.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,161.92 : 868,239 = 342,681.12 : x
  2. Step 2: Convert to fraction form
    629,161.92/868,239 = 342,681.12/x
  3. Step 3: Cross multiply
    629,161.92x = 868,239 × 342,681.12
  4. Step 4: Simplify right side
    629,161.92x = 297,529,112,947.68
  5. Step 5: Solve for x
    x = 297,529,112,947.68/629,161.92
  6. Step 6: Final answer
    x = 472,897.52

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Double scale
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1.5x scale

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.