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Finding the Fourth Proportional to 657,979.20, 985,656.60 and 342,613.80

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Solution

The fourth proportional to 657,979.20, 985,656.60 and 342,613.80 is: 513,237.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,979.20 : 985,656.60 = 342,613.80 : x
  2. Step 2: Convert to fraction form
    657,979.20/985,656.60 = 342,613.80/x
  3. Step 3: Cross multiply
    657,979.20x = 985,656.60 × 342,613.80
  4. Step 4: Simplify right side
    657,979.20x = 337,699,553,221.08
  5. Step 5: Solve for x
    x = 337,699,553,221.08/657,979.20
  6. Step 6: Final answer
    x = 513,237.43

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1.5x scale

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.