Home / 454,420.40-681,630.60-217,641.20

Finding the Fourth Proportional to 454,420.40, 681,630.60 and 217,641.20

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Solution

The fourth proportional to 454,420.40, 681,630.60 and 217,641.20 is: 326,461.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,420.40 : 681,630.60 = 217,641.20 : x
  2. Step 2: Convert to fraction form
    454,420.40/681,630.60 = 217,641.20/x
  3. Step 3: Cross multiply
    454,420.40x = 681,630.60 × 217,641.20
  4. Step 4: Simplify right side
    454,420.40x = 148,350,901,740.72
  5. Step 5: Solve for x
    x = 148,350,901,740.72/454,420.40
  6. Step 6: Final answer
    x = 326,461.80

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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.