Home / 865,674.20-1,298,511.30-274,698.20

Finding the Fourth Proportional to 865,674.20, 1,298,511.30 and 274,698.20

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Solution

The fourth proportional to 865,674.20, 1,298,511.30 and 274,698.20 is: 412,047.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,674.20 : 1,298,511.30 = 274,698.20 : x
  2. Step 2: Convert to fraction form
    865,674.20/1,298,511.30 = 274,698.20/x
  3. Step 3: Cross multiply
    865,674.20x = 1,298,511.30 × 274,698.20
  4. Step 4: Simplify right side
    865,674.20x = 356,698,716,789.66
  5. Step 5: Solve for x
    x = 356,698,716,789.66/865,674.20
  6. Step 6: Final answer
    x = 412,047.30

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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.