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Finding the Fourth Proportional to 887,706, 1,225,034.28 and 485,298

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Solution

The fourth proportional to 887,706, 1,225,034.28 and 485,298 is: 669,711.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,706 : 1,225,034.28 = 485,298 : x
  2. Step 2: Convert to fraction form
    887,706/1,225,034.28 = 485,298/x
  3. Step 3: Cross multiply
    887,706x = 1,225,034.28 × 485,298
  4. Step 4: Simplify right side
    887,706x = 594,506,686,015.44
  5. Step 5: Solve for x
    x = 594,506,686,015.44/887,706
  6. Step 6: Final answer
    x = 669,711.24

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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.