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Finding the Fourth Proportional to 572,319.40, 857,334.56 and 344,489.88

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Solution

The fourth proportional to 572,319.40, 857,334.56 and 344,489.88 is: 516,045.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,319.40 : 857,334.56 = 344,489.88 : x
  2. Step 2: Convert to fraction form
    572,319.40/857,334.56 = 344,489.88/x
  3. Step 3: Cross multiply
    572,319.40x = 857,334.56 × 344,489.88
  4. Step 4: Simplify right side
    572,319.40x = 295,343,079,694.25
  5. Step 5: Solve for x
    x = 295,343,079,694.25/572,319.40
  6. Step 6: Final answer
    x = 516,045.90

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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.