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Finding the Fourth Proportional to 572,820.60, 858,906.90 and 217,846.20

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Solution

The fourth proportional to 572,820.60, 858,906.90 and 217,846.20 is: 326,646.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,820.60 : 858,906.90 = 217,846.20 : x
  2. Step 2: Convert to fraction form
    572,820.60/858,906.90 = 217,846.20/x
  3. Step 3: Cross multiply
    572,820.60x = 858,906.90 × 217,846.20
  4. Step 4: Simplify right side
    572,820.60x = 187,109,604,318.78
  5. Step 5: Solve for x
    x = 187,109,604,318.78/572,820.60
  6. Step 6: Final answer
    x = 326,646.08

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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.