Home / 643,328.43-887,776.09-371,387.13

Finding the Fourth Proportional to 643,328.43, 887,776.09 and 371,387.13

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Solution

The fourth proportional to 643,328.43, 887,776.09 and 371,387.13 is: 512,504.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,328.43 : 887,776.09 = 371,387.13 : x
  2. Step 2: Convert to fraction form
    643,328.43/887,776.09 = 371,387.13/x
  3. Step 3: Cross multiply
    643,328.43x = 887,776.09 × 371,387.13
  4. Step 4: Simplify right side
    643,328.43x = 329,708,614,147.72
  5. Step 5: Solve for x
    x = 329,708,614,147.72/643,328.43
  6. Step 6: Final answer
    x = 512,504.34

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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.