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Finding the Fourth Proportional to 704,479.87, 972,182.55 and 382,189.88

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Solution

The fourth proportional to 704,479.87, 972,182.55 and 382,189.88 is: 527,422.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,479.87 : 972,182.55 = 382,189.88 : x
  2. Step 2: Convert to fraction form
    704,479.87/972,182.55 = 382,189.88/x
  3. Step 3: Cross multiply
    704,479.87x = 972,182.55 × 382,189.88
  4. Step 4: Simplify right side
    704,479.87x = 371,558,332,122.59
  5. Step 5: Solve for x
    x = 371,558,332,122.59/704,479.87
  6. Step 6: Final answer
    x = 527,422.21

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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.