Home / 721,137.30-1,081,803.15-247,967.70

Finding the Fourth Proportional to 721,137.30, 1,081,803.15 and 247,967.70

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Solution

The fourth proportional to 721,137.30, 1,081,803.15 and 247,967.70 is: 371,984.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,137.30 : 1,081,803.15 = 247,967.70 : x
  2. Step 2: Convert to fraction form
    721,137.30/1,081,803.15 = 247,967.70/x
  3. Step 3: Cross multiply
    721,137.30x = 1,081,803.15 × 247,967.70
  4. Step 4: Simplify right side
    721,137.30x = 268,252,238,958.26
  5. Step 5: Solve for x
    x = 268,252,238,958.26/721,137.30
  6. Step 6: Final answer
    x = 371,984.97

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Double scale
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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.