Home / 657,979.20-986,968.80-284,002.20

Finding the Fourth Proportional to 657,979.20, 986,968.80 and 284,002.20

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Solution

The fourth proportional to 657,979.20, 986,968.80 and 284,002.20 is: 426,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,979.20 : 986,968.80 = 284,002.20 : x
  2. Step 2: Convert to fraction form
    657,979.20/986,968.80 = 284,002.20/x
  3. Step 3: Cross multiply
    657,979.20x = 986,968.80 × 284,002.20
  4. Step 4: Simplify right side
    657,979.20x = 280,301,310,531.36
  5. Step 5: Solve for x
    x = 280,301,310,531.36/657,979.20
  6. Step 6: Final answer
    x = 426,003.30

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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.