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Finding the Fourth Proportional to 657,937.80, 986,906.70 and 378,001.80

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Solution

The fourth proportional to 657,937.80, 986,906.70 and 378,001.80 is: 567,002.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,937.80 : 986,906.70 = 378,001.80 : x
  2. Step 2: Convert to fraction form
    657,937.80/986,906.70 = 378,001.80/x
  3. Step 3: Cross multiply
    657,937.80x = 986,906.70 × 378,001.80
  4. Step 4: Simplify right side
    657,937.80x = 373,052,509,032.06
  5. Step 5: Solve for x
    x = 373,052,509,032.06/657,937.80
  6. Step 6: Final answer
    x = 567,002.70

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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.