Home / 657,621.60-986,432.40-258,129.60

Finding the Fourth Proportional to 657,621.60, 986,432.40 and 258,129.60

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Solution

The fourth proportional to 657,621.60, 986,432.40 and 258,129.60 is: 387,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,621.60 : 986,432.40 = 258,129.60 : x
  2. Step 2: Convert to fraction form
    657,621.60/986,432.40 = 258,129.60/x
  3. Step 3: Cross multiply
    657,621.60x = 986,432.40 × 258,129.60
  4. Step 4: Simplify right side
    657,621.60x = 254,627,400,839.04
  5. Step 5: Solve for x
    x = 254,627,400,839.04/657,621.60
  6. Step 6: Final answer
    x = 387,194.40

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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.