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Finding the Fourth Proportional to 657,060.80, 985,202.40 and 342,132.80

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Solution

The fourth proportional to 657,060.80, 985,202.40 and 342,132.80 is: 512,996.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,060.80 : 985,202.40 = 342,132.80 : x
  2. Step 2: Convert to fraction form
    657,060.80/985,202.40 = 342,132.80/x
  3. Step 3: Cross multiply
    657,060.80x = 985,202.40 × 342,132.80
  4. Step 4: Simplify right side
    657,060.80x = 337,070,055,678.72
  5. Step 5: Solve for x
    x = 337,070,055,678.72/657,060.80
  6. Step 6: Final answer
    x = 512,996.75

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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.