Home / 672,742.73-928,609.92-400,895.88

Finding the Fourth Proportional to 672,742.73, 928,609.92 and 400,895.88

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Solution

The fourth proportional to 672,742.73, 928,609.92 and 400,895.88 is: 553,370.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,742.73 : 928,609.92 = 400,895.88 : x
  2. Step 2: Convert to fraction form
    672,742.73/928,609.92 = 400,895.88/x
  3. Step 3: Cross multiply
    672,742.73x = 928,609.92 × 400,895.88
  4. Step 4: Simplify right side
    672,742.73x = 372,275,891,055.13
  5. Step 5: Solve for x
    x = 372,275,891,055.13/672,742.73
  6. Step 6: Final answer
    x = 553,370.37

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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.