Home / 817,963.20-1,226,944.80-687,326.40

Finding the Fourth Proportional to 817,963.20, 1,226,944.80 and 687,326.40

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Solution

The fourth proportional to 817,963.20, 1,226,944.80 and 687,326.40 is: 1,030,989.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,963.20 : 1,226,944.80 = 687,326.40 : x
  2. Step 2: Convert to fraction form
    817,963.20/1,226,944.80 = 687,326.40/x
  3. Step 3: Cross multiply
    817,963.20x = 1,226,944.80 × 687,326.40
  4. Step 4: Simplify right side
    817,963.20x = 843,311,552,382.72
  5. Step 5: Solve for x
    x = 843,311,552,382.72/817,963.20
  6. Step 6: Final answer
    x = 1,030,989.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.