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Finding the Fourth Proportional to 704,813.88, 972,200.76 and 418,131

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Solution

The fourth proportional to 704,813.88, 972,200.76 and 418,131 is: 576,758.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,813.88 : 972,200.76 = 418,131 : x
  2. Step 2: Convert to fraction form
    704,813.88/972,200.76 = 418,131/x
  3. Step 3: Cross multiply
    704,813.88x = 972,200.76 × 418,131
  4. Step 4: Simplify right side
    704,813.88x = 406,507,275,979.56
  5. Step 5: Solve for x
    x = 406,507,275,979.56/704,813.88
  6. Step 6: Final answer
    x = 576,758.33

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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.