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Finding the Fourth Proportional to 887,112, 1,224,244.80 and 484,729.92

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Solution

The fourth proportional to 887,112, 1,224,244.80 and 484,729.92 is: 668,943.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,112 : 1,224,244.80 = 484,729.92 : x
  2. Step 2: Convert to fraction form
    887,112/1,224,244.80 = 484,729.92/x
  3. Step 3: Cross multiply
    887,112x = 1,224,244.80 × 484,729.92
  4. Step 4: Simplify right side
    887,112x = 593,428,083,964.42
  5. Step 5: Solve for x
    x = 593,428,083,964.42/887,112
  6. Step 6: Final answer
    x = 668,943.81

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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.