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Finding the Fourth Proportional to 672,727.80, 928,589.33 and 400,880.97

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Solution

The fourth proportional to 672,727.80, 928,589.33 and 400,880.97 is: 553,349.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,727.80 : 928,589.33 = 400,880.97 : x
  2. Step 2: Convert to fraction form
    672,727.80/928,589.33 = 400,880.97/x
  3. Step 3: Cross multiply
    672,727.80x = 928,589.33 × 400,880.97
  4. Step 4: Simplify right side
    672,727.80x = 372,253,790,840.95
  5. Step 5: Solve for x
    x = 372,253,790,840.95/672,727.80
  6. Step 6: Final answer
    x = 553,349.79

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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.