Home / 729,379.69-1,005,339.29-487,574.03

Finding the Fourth Proportional to 729,379.69, 1,005,339.29 and 487,574.03

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Solution

The fourth proportional to 729,379.69, 1,005,339.29 and 487,574.03 is: 672,046.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,379.69 : 1,005,339.29 = 487,574.03 : x
  2. Step 2: Convert to fraction form
    729,379.69/1,005,339.29 = 487,574.03/x
  3. Step 3: Cross multiply
    729,379.69x = 1,005,339.29 × 487,574.03
  4. Step 4: Simplify right side
    729,379.69x = 490,177,329,142.64
  5. Step 5: Solve for x
    x = 490,177,329,142.64/729,379.69
  6. Step 6: Final answer
    x = 672,046.86

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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.