Home / 1,234,139.40-1,851,209.10-435,414.60

Finding the Fourth Proportional to 1,234,139.40, 1,851,209.10 and 435,414.60

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Solution

The fourth proportional to 1,234,139.40, 1,851,209.10 and 435,414.60 is: 653,121.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,234,139.40 : 1,851,209.10 = 435,414.60 : x
  2. Step 2: Convert to fraction form
    1,234,139.40/1,851,209.10 = 435,414.60/x
  3. Step 3: Cross multiply
    1,234,139.40x = 1,851,209.10 × 435,414.60
  4. Step 4: Simplify right side
    1,234,139.40x = 806,043,469,792.86
  5. Step 5: Solve for x
    x = 806,043,469,792.86/1,234,139.40
  6. Step 6: Final answer
    x = 653,121.90

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Double scale
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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.