Home / 657,070.20-985,605.30-342,142.20

Finding the Fourth Proportional to 657,070.20, 985,605.30 and 342,142.20

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Solution

The fourth proportional to 657,070.20, 985,605.30 and 342,142.20 is: 513,213.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,070.20 : 985,605.30 = 342,142.20 : x
  2. Step 2: Convert to fraction form
    657,070.20/985,605.30 = 342,142.20/x
  3. Step 3: Cross multiply
    657,070.20x = 985,605.30 × 342,142.20
  4. Step 4: Simplify right side
    657,070.20x = 337,217,165,673.66
  5. Step 5: Solve for x
    x = 337,217,165,673.66/657,070.20
  6. Step 6: Final answer
    x = 513,213.30

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Double scale
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Similar ratio
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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.