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Finding the Fourth Proportional to 787,055.72, 1,086,131.88 and 447,524

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Solution

The fourth proportional to 787,055.72, 1,086,131.88 and 447,524 is: 617,580.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,055.72 : 1,086,131.88 = 447,524 : x
  2. Step 2: Convert to fraction form
    787,055.72/1,086,131.88 = 447,524/x
  3. Step 3: Cross multiply
    787,055.72x = 1,086,131.88 × 447,524
  4. Step 4: Simplify right side
    787,055.72x = 486,070,083,465.12
  5. Step 5: Solve for x
    x = 486,070,083,465.12/787,055.72
  6. Step 6: Final answer
    x = 617,580.27

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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.