Home / 866,380.20-1,299,570.30-656,428.20

Finding the Fourth Proportional to 866,380.20, 1,299,570.30 and 656,428.20

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Solution

The fourth proportional to 866,380.20, 1,299,570.30 and 656,428.20 is: 984,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,380.20 : 1,299,570.30 = 656,428.20 : x
  2. Step 2: Convert to fraction form
    866,380.20/1,299,570.30 = 656,428.20/x
  3. Step 3: Cross multiply
    866,380.20x = 1,299,570.30 × 656,428.20
  4. Step 4: Simplify right side
    866,380.20x = 853,074,592,802.46
  5. Step 5: Solve for x
    x = 853,074,592,802.46/866,380.20
  6. Step 6: Final answer
    x = 984,642.30

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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.