Home / 651,863.20-977,211.60-427,331.20

Finding the Fourth Proportional to 651,863.20, 977,211.60 and 427,331.20

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Solution

The fourth proportional to 651,863.20, 977,211.60 and 427,331.20 is: 640,614.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,863.20 : 977,211.60 = 427,331.20 : x
  2. Step 2: Convert to fraction form
    651,863.20/977,211.60 = 427,331.20/x
  3. Step 3: Cross multiply
    651,863.20x = 977,211.60 × 427,331.20
  4. Step 4: Simplify right side
    651,863.20x = 417,593,005,681.92
  5. Step 5: Solve for x
    x = 417,593,005,681.92/651,863.20
  6. Step 6: Final answer
    x = 640,614.48

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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.