Home / 870,147.30-1,305,220.95-471,566.55

Finding the Fourth Proportional to 870,147.30, 1,305,220.95 and 471,566.55

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Solution

The fourth proportional to 870,147.30, 1,305,220.95 and 471,566.55 is: 707,349.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,147.30 : 1,305,220.95 = 471,566.55 : x
  2. Step 2: Convert to fraction form
    870,147.30/1,305,220.95 = 471,566.55/x
  3. Step 3: Cross multiply
    870,147.30x = 1,305,220.95 × 471,566.55
  4. Step 4: Simplify right side
    870,147.30x = 615,498,540,379.22
  5. Step 5: Solve for x
    x = 615,498,540,379.22/870,147.30
  6. Step 6: Final answer
    x = 707,349.83

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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.