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Finding the Fourth Proportional to 572,891.72, 790,502.82 and 331,127.72

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Solution

The fourth proportional to 572,891.72, 790,502.82 and 331,127.72 is: 456,905.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,891.72 : 790,502.82 = 331,127.72 : x
  2. Step 2: Convert to fraction form
    572,891.72/790,502.82 = 331,127.72/x
  3. Step 3: Cross multiply
    572,891.72x = 790,502.82 × 331,127.72
  4. Step 4: Simplify right side
    572,891.72x = 261,757,396,440.17
  5. Step 5: Solve for x
    x = 261,757,396,440.17/572,891.72
  6. Step 6: Final answer
    x = 456,905.53

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1.5x scale

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.