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Finding the Fourth Proportional to 657,059.80, 985,200.90 and 342,131.80

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Solution

The fourth proportional to 657,059.80, 985,200.90 and 342,131.80 is: 512,995.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,059.80 : 985,200.90 = 342,131.80 : x
  2. Step 2: Convert to fraction form
    657,059.80/985,200.90 = 342,131.80/x
  3. Step 3: Cross multiply
    657,059.80x = 985,200.90 × 342,131.80
  4. Step 4: Simplify right side
    657,059.80x = 337,068,557,278.62
  5. Step 5: Solve for x
    x = 337,068,557,278.62/657,059.80
  6. Step 6: Final answer
    x = 512,995.25

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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.