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Finding the Fourth Proportional to 672,936.71, 928,418.15 and 431,352.48

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Solution

The fourth proportional to 672,936.71, 928,418.15 and 431,352.48 is: 595,116.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,936.71 : 928,418.15 = 431,352.48 : x
  2. Step 2: Convert to fraction form
    672,936.71/928,418.15 = 431,352.48/x
  3. Step 3: Cross multiply
    672,936.71x = 928,418.15 × 431,352.48
  4. Step 4: Simplify right side
    672,936.71x = 400,475,469,322.75
  5. Step 5: Solve for x
    x = 400,475,469,322.75/672,936.71
  6. Step 6: Final answer
    x = 595,116.10

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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.