Home / 828,378.44-1,240,943.76-429,281

Finding the Fourth Proportional to 828,378.44, 1,240,943.76 and 429,281

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Solution

The fourth proportional to 828,378.44, 1,240,943.76 and 429,281 is: 643,079.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,378.44 : 1,240,943.76 = 429,281 : x
  2. Step 2: Convert to fraction form
    828,378.44/1,240,943.76 = 429,281/x
  3. Step 3: Cross multiply
    828,378.44x = 1,240,943.76 × 429,281
  4. Step 4: Simplify right side
    828,378.44x = 532,713,578,236.56
  5. Step 5: Solve for x
    x = 532,713,578,236.56/828,378.44
  6. Step 6: Final answer
    x = 643,079.97

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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.