Home / 728,443.05-1,002,963.92-619,332.81

Finding the Fourth Proportional to 728,443.05, 1,002,963.92 and 619,332.81

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Solution

The fourth proportional to 728,443.05, 1,002,963.92 and 619,332.81 is: 852,734.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,443.05 : 1,002,963.92 = 619,332.81 : x
  2. Step 2: Convert to fraction form
    728,443.05/1,002,963.92 = 619,332.81/x
  3. Step 3: Cross multiply
    728,443.05x = 1,002,963.92 × 619,332.81
  4. Step 4: Simplify right side
    728,443.05x = 621,168,459,805.55
  5. Step 5: Solve for x
    x = 621,168,459,805.55/728,443.05
  6. Step 6: Final answer
    x = 852,734.42

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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.