Home / 643,049.28-887,227.02-506,660.40

Finding the Fourth Proportional to 643,049.28, 887,227.02 and 506,660.40

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Solution

The fourth proportional to 643,049.28, 887,227.02 and 506,660.40 is: 699,048.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,049.28 : 887,227.02 = 506,660.40 : x
  2. Step 2: Convert to fraction form
    643,049.28/887,227.02 = 506,660.40/x
  3. Step 3: Cross multiply
    643,049.28x = 887,227.02 × 506,660.40
  4. Step 4: Simplify right side
    643,049.28x = 449,522,796,844.01
  5. Step 5: Solve for x
    x = 449,522,796,844.01/643,049.28
  6. Step 6: Final answer
    x = 699,048.75

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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.