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Finding the Fourth Proportional to 656,689.92, 906,232.56 and 354,883.92

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Solution

The fourth proportional to 656,689.92, 906,232.56 and 354,883.92 is: 489,740.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,689.92 : 906,232.56 = 354,883.92 : x
  2. Step 2: Convert to fraction form
    656,689.92/906,232.56 = 354,883.92/x
  3. Step 3: Cross multiply
    656,689.92x = 906,232.56 × 354,883.92
  4. Step 4: Simplify right side
    656,689.92x = 321,607,363,324.44
  5. Step 5: Solve for x
    x = 321,607,363,324.44/656,689.92
  6. Step 6: Final answer
    x = 489,740.06

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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.