Home / 870,220.80-1,305,331.20-496,281.60

Finding the Fourth Proportional to 870,220.80, 1,305,331.20 and 496,281.60

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Solution

The fourth proportional to 870,220.80, 1,305,331.20 and 496,281.60 is: 744,422.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,220.80 : 1,305,331.20 = 496,281.60 : x
  2. Step 2: Convert to fraction form
    870,220.80/1,305,331.20 = 496,281.60/x
  3. Step 3: Cross multiply
    870,220.80x = 1,305,331.20 × 496,281.60
  4. Step 4: Simplify right side
    870,220.80x = 647,811,856,465.92
  5. Step 5: Solve for x
    x = 647,811,856,465.92/870,220.80
  6. Step 6: Final answer
    x = 744,422.40

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Double scale
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Similar ratio
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1.5x scale

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.