Home / 870,990.12-1,201,957.38-489,008.04

Finding the Fourth Proportional to 870,990.12, 1,201,957.38 and 489,008.04

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Solution

The fourth proportional to 870,990.12, 1,201,957.38 and 489,008.04 is: 674,826.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,990.12 : 1,201,957.38 = 489,008.04 : x
  2. Step 2: Convert to fraction form
    870,990.12/1,201,957.38 = 489,008.04/x
  3. Step 3: Cross multiply
    870,990.12x = 1,201,957.38 × 489,008.04
  4. Step 4: Simplify right side
    870,990.12x = 587,766,822,557.34
  5. Step 5: Solve for x
    x = 587,766,822,557.34/870,990.12
  6. Step 6: Final answer
    x = 674,826.05

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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.