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Finding the Fourth Proportional to 887,803.88, 1,225,174.50 and 485,395.88

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Solution

The fourth proportional to 887,803.88, 1,225,174.50 and 485,395.88 is: 669,849.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,803.88 : 1,225,174.50 = 485,395.88 : x
  2. Step 2: Convert to fraction form
    887,803.88/1,225,174.50 = 485,395.88/x
  3. Step 3: Cross multiply
    887,803.88x = 1,225,174.50 × 485,395.88
  4. Step 4: Simplify right side
    887,803.88x = 594,694,654,581.06
  5. Step 5: Solve for x
    x = 594,694,654,581.06/887,803.88
  6. Step 6: Final answer
    x = 669,849.13

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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.