Home / 651,678.20-977,517.30-402,500.60

Finding the Fourth Proportional to 651,678.20, 977,517.30 and 402,500.60

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Solution

The fourth proportional to 651,678.20, 977,517.30 and 402,500.60 is: 603,750.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,678.20 : 977,517.30 = 402,500.60 : x
  2. Step 2: Convert to fraction form
    651,678.20/977,517.30 = 402,500.60/x
  3. Step 3: Cross multiply
    651,678.20x = 977,517.30 × 402,500.60
  4. Step 4: Simplify right side
    651,678.20x = 393,451,299,760.38
  5. Step 5: Solve for x
    x = 393,451,299,760.38/651,678.20
  6. Step 6: Final answer
    x = 603,750.90

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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.