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Finding the Fourth Proportional to 886,966.20, 1,330,449.30 and 709,819.20

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Solution

The fourth proportional to 886,966.20, 1,330,449.30 and 709,819.20 is: 1,064,728.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,966.20 : 1,330,449.30 = 709,819.20 : x
  2. Step 2: Convert to fraction form
    886,966.20/1,330,449.30 = 709,819.20/x
  3. Step 3: Cross multiply
    886,966.20x = 1,330,449.30 × 709,819.20
  4. Step 4: Simplify right side
    886,966.20x = 944,378,457,766.56
  5. Step 5: Solve for x
    x = 944,378,457,766.56/886,966.20
  6. Step 6: Final answer
    x = 1,064,728.80

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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.