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Finding the Fourth Proportional to 656,793.02, 906,373.89 and 354,987.02

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Solution

The fourth proportional to 656,793.02, 906,373.89 and 354,987.02 is: 489,881.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,793.02 : 906,373.89 = 354,987.02 : x
  2. Step 2: Convert to fraction form
    656,793.02/906,373.89 = 354,987.02/x
  3. Step 3: Cross multiply
    656,793.02x = 906,373.89 × 354,987.02
  4. Step 4: Simplify right side
    656,793.02x = 321,750,961,685.04
  5. Step 5: Solve for x
    x = 321,750,961,685.04/656,793.02
  6. Step 6: Final answer
    x = 489,881.83

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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.