Home / 865,665.20-1,298,497.80-274,689.20

Finding the Fourth Proportional to 865,665.20, 1,298,497.80 and 274,689.20

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Solution

The fourth proportional to 865,665.20, 1,298,497.80 and 274,689.20 is: 412,033.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,665.20 : 1,298,497.80 = 274,689.20 : x
  2. Step 2: Convert to fraction form
    865,665.20/1,298,497.80 = 274,689.20/x
  3. Step 3: Cross multiply
    865,665.20x = 1,298,497.80 × 274,689.20
  4. Step 4: Simplify right side
    865,665.20x = 356,683,321,883.76
  5. Step 5: Solve for x
    x = 356,683,321,883.76/865,665.20
  6. Step 6: Final answer
    x = 412,033.80

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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.