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Finding the Fourth Proportional to 718,899.04, 992,083.98 and 396,609

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Solution

The fourth proportional to 718,899.04, 992,083.98 and 396,609 is: 547,322.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,899.04 : 992,083.98 = 396,609 : x
  2. Step 2: Convert to fraction form
    718,899.04/992,083.98 = 396,609/x
  3. Step 3: Cross multiply
    718,899.04x = 992,083.98 × 396,609
  4. Step 4: Simplify right side
    718,899.04x = 393,469,435,223.82
  5. Step 5: Solve for x
    x = 393,469,435,223.82/718,899.04
  6. Step 6: Final answer
    x = 547,322.24

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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.