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Finding the Fourth Proportional to 656,798.52, 906,381.72 and 354,992.52

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Solution

The fourth proportional to 656,798.52, 906,381.72 and 354,992.52 is: 489,889.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,798.52 : 906,381.72 = 354,992.52 : x
  2. Step 2: Convert to fraction form
    656,798.52/906,381.72 = 354,992.52/x
  3. Step 3: Cross multiply
    656,798.52x = 906,381.72 × 354,992.52
  4. Step 4: Simplify right side
    656,798.52x = 321,758,730,864.73
  5. Step 5: Solve for x
    x = 321,758,730,864.73/656,798.52
  6. Step 6: Final answer
    x = 489,889.55

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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.