Home / 870,836.80-1,306,255.20-658,260.40

Finding the Fourth Proportional to 870,836.80, 1,306,255.20 and 658,260.40

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Solution

The fourth proportional to 870,836.80, 1,306,255.20 and 658,260.40 is: 987,390.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,836.80 : 1,306,255.20 = 658,260.40 : x
  2. Step 2: Convert to fraction form
    870,836.80/1,306,255.20 = 658,260.40/x
  3. Step 3: Cross multiply
    870,836.80x = 1,306,255.20 × 658,260.40
  4. Step 4: Simplify right side
    870,836.80x = 859,856,070,454.08
  5. Step 5: Solve for x
    x = 859,856,070,454.08/870,836.80
  6. Step 6: Final answer
    x = 987,390.60

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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.