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Finding the Fourth Proportional to 657,077.80, 985,649.10 and 342,149.80

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Solution

The fourth proportional to 657,077.80, 985,649.10 and 342,149.80 is: 513,241.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,077.80 : 985,649.10 = 342,149.80 : x
  2. Step 2: Convert to fraction form
    657,077.80/985,649.10 = 342,149.80/x
  3. Step 3: Cross multiply
    657,077.80x = 985,649.10 × 342,149.80
  4. Step 4: Simplify right side
    657,077.80x = 337,239,642,435.18
  5. Step 5: Solve for x
    x = 337,239,642,435.18/657,077.80
  6. Step 6: Final answer
    x = 513,241.57

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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.