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Finding the Fourth Proportional to 887,775, 1,225,133.82 and 485,367

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Solution

The fourth proportional to 887,775, 1,225,133.82 and 485,367 is: 669,808.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,775 : 1,225,133.82 = 485,367 : x
  2. Step 2: Convert to fraction form
    887,775/1,225,133.82 = 485,367/x
  3. Step 3: Cross multiply
    887,775x = 1,225,133.82 × 485,367
  4. Step 4: Simplify right side
    887,775x = 594,639,526,811.94
  5. Step 5: Solve for x
    x = 594,639,526,811.94/887,775
  6. Step 6: Final answer
    x = 669,808.82

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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.