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Finding the Fourth Proportional to 709,776.04, 979,432.12 and 403,771

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Solution

The fourth proportional to 709,776.04, 979,432.12 and 403,771 is: 557,170.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,776.04 : 979,432.12 = 403,771 : x
  2. Step 2: Convert to fraction form
    709,776.04/979,432.12 = 403,771/x
  3. Step 3: Cross multiply
    709,776.04x = 979,432.12 × 403,771
  4. Step 4: Simplify right side
    709,776.04x = 395,466,286,524.52
  5. Step 5: Solve for x
    x = 395,466,286,524.52/709,776.04
  6. Step 6: Final answer
    x = 557,170.52

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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.