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Finding the Fourth Proportional to 572,003.90, 858,005.85 and 439,552.70

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Solution

The fourth proportional to 572,003.90, 858,005.85 and 439,552.70 is: 659,329.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,003.90 : 858,005.85 = 439,552.70 : x
  2. Step 2: Convert to fraction form
    572,003.90/858,005.85 = 439,552.70/x
  3. Step 3: Cross multiply
    572,003.90x = 858,005.85 × 439,552.70
  4. Step 4: Simplify right side
    572,003.90x = 377,138,787,983.30
  5. Step 5: Solve for x
    x = 377,138,787,983.30/572,003.90
  6. Step 6: Final answer
    x = 659,329.05

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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.