Home / 729,454.48-1,005,442.08-487,648.72

Finding the Fourth Proportional to 729,454.48, 1,005,442.08 and 487,648.72

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Solution

The fourth proportional to 729,454.48, 1,005,442.08 and 487,648.72 is: 672,149.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,454.48 : 1,005,442.08 = 487,648.72 : x
  2. Step 2: Convert to fraction form
    729,454.48/1,005,442.08 = 487,648.72/x
  3. Step 3: Cross multiply
    729,454.48x = 1,005,442.08 × 487,648.72
  4. Step 4: Simplify right side
    729,454.48x = 490,302,543,346.14
  5. Step 5: Solve for x
    x = 490,302,543,346.14/729,454.48
  6. Step 6: Final answer
    x = 672,149.61

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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.