Home / 686,500.20-1,029,750.30-616,516.20

Finding the Fourth Proportional to 686,500.20, 1,029,750.30 and 616,516.20

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Solution

The fourth proportional to 686,500.20, 1,029,750.30 and 616,516.20 is: 924,774.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,500.20 : 1,029,750.30 = 616,516.20 : x
  2. Step 2: Convert to fraction form
    686,500.20/1,029,750.30 = 616,516.20/x
  3. Step 3: Cross multiply
    686,500.20x = 1,029,750.30 × 616,516.20
  4. Step 4: Simplify right side
    686,500.20x = 634,857,741,904.86
  5. Step 5: Solve for x
    x = 634,857,741,904.86/686,500.20
  6. Step 6: Final answer
    x = 924,774.30

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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.