Home / 828,751.88-1,143,689.28-489,220.04

Finding the Fourth Proportional to 828,751.88, 1,143,689.28 and 489,220.04

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Solution

The fourth proportional to 828,751.88, 1,143,689.28 and 489,220.04 is: 675,130.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,751.88 : 1,143,689.28 = 489,220.04 : x
  2. Step 2: Convert to fraction form
    828,751.88/1,143,689.28 = 489,220.04/x
  3. Step 3: Cross multiply
    828,751.88x = 1,143,689.28 × 489,220.04
  4. Step 4: Simplify right side
    828,751.88x = 559,515,715,309.17
  5. Step 5: Solve for x
    x = 559,515,715,309.17/828,751.88
  6. Step 6: Final answer
    x = 675,130.55

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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.