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Finding the Fourth Proportional to 657,259.80, 985,500.90 and 342,331.80

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Solution

The fourth proportional to 657,259.80, 985,500.90 and 342,331.80 is: 513,295.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,259.80 : 985,500.90 = 342,331.80 : x
  2. Step 2: Convert to fraction form
    657,259.80/985,500.90 = 342,331.80/x
  3. Step 3: Cross multiply
    657,259.80x = 985,500.90 × 342,331.80
  4. Step 4: Simplify right side
    657,259.80x = 337,368,296,998.62
  5. Step 5: Solve for x
    x = 337,368,296,998.62/657,259.80
  6. Step 6: Final answer
    x = 513,295.19

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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.