Home / 887,836.50-1,225,214.38-485,428.50

Finding the Fourth Proportional to 887,836.50, 1,225,214.38 and 485,428.50

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Solution

The fourth proportional to 887,836.50, 1,225,214.38 and 485,428.50 is: 669,891.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,836.50 : 1,225,214.38 = 485,428.50 : x
  2. Step 2: Convert to fraction form
    887,836.50/1,225,214.38 = 485,428.50/x
  3. Step 3: Cross multiply
    887,836.50x = 1,225,214.38 × 485,428.50
  4. Step 4: Simplify right side
    887,836.50x = 594,753,978,661.83
  5. Step 5: Solve for x
    x = 594,753,978,661.83/887,836.50
  6. Step 6: Final answer
    x = 669,891.34

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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.