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Finding the Fourth Proportional to 672,932.95, 928,412.97 and 431,348.73

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Solution

The fourth proportional to 672,932.95, 928,412.97 and 431,348.73 is: 595,110.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,932.95 : 928,412.97 = 431,348.73 : x
  2. Step 2: Convert to fraction form
    672,932.95/928,412.97 = 431,348.73/x
  3. Step 3: Cross multiply
    672,932.95x = 928,412.97 × 431,348.73
  4. Step 4: Simplify right side
    672,932.95x = 400,469,755,525.03
  5. Step 5: Solve for x
    x = 400,469,755,525.03/672,932.95
  6. Step 6: Final answer
    x = 595,110.93

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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.