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Finding the Fourth Proportional to 787,065.72, 1,086,145.68 and 447,534

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Solution

The fourth proportional to 787,065.72, 1,086,145.68 and 447,534 is: 617,594.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,065.72 : 1,086,145.68 = 447,534 : x
  2. Step 2: Convert to fraction form
    787,065.72/1,086,145.68 = 447,534/x
  3. Step 3: Cross multiply
    787,065.72x = 1,086,145.68 × 447,534
  4. Step 4: Simplify right side
    787,065.72x = 486,087,120,753.12
  5. Step 5: Solve for x
    x = 486,087,120,753.12/787,065.72
  6. Step 6: Final answer
    x = 617,594.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.