Home / 657,072.30-985,608.45-342,144.30

Finding the Fourth Proportional to 657,072.30, 985,608.45 and 342,144.30

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Solution

The fourth proportional to 657,072.30, 985,608.45 and 342,144.30 is: 513,216.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,072.30 : 985,608.45 = 342,144.30 : x
  2. Step 2: Convert to fraction form
    657,072.30/985,608.45 = 342,144.30/x
  3. Step 3: Cross multiply
    657,072.30x = 985,608.45 × 342,144.30
  4. Step 4: Simplify right side
    657,072.30x = 337,220,313,199.34
  5. Step 5: Solve for x
    x = 337,220,313,199.34/657,072.30
  6. Step 6: Final answer
    x = 513,216.45

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Half scale
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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.