Home / 865,538.80-1,298,308.20-225,841.30

Finding the Fourth Proportional to 865,538.80, 1,298,308.20 and 225,841.30

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Solution

The fourth proportional to 865,538.80, 1,298,308.20 and 225,841.30 is: 338,761.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,538.80 : 1,298,308.20 = 225,841.30 : x
  2. Step 2: Convert to fraction form
    865,538.80/1,298,308.20 = 225,841.30/x
  3. Step 3: Cross multiply
    865,538.80x = 1,298,308.20 × 225,841.30
  4. Step 4: Simplify right side
    865,538.80x = 293,211,611,688.66
  5. Step 5: Solve for x
    x = 293,211,611,688.66/865,538.80
  6. Step 6: Final answer
    x = 338,761.95

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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.