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Finding the Fourth Proportional to 785,987.76, 1,179,211.28 and 253,497

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Solution

The fourth proportional to 785,987.76, 1,179,211.28 and 253,497 is: 380,319.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,987.76 : 1,179,211.28 = 253,497 : x
  2. Step 2: Convert to fraction form
    785,987.76/1,179,211.28 = 253,497/x
  3. Step 3: Cross multiply
    785,987.76x = 1,179,211.28 × 253,497
  4. Step 4: Simplify right side
    785,987.76x = 298,926,521,846.16
  5. Step 5: Solve for x
    x = 298,926,521,846.16/785,987.76
  6. Step 6: Final answer
    x = 380,319.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.