Home / 866,003.40-1,299,005.10-266,911.20

Finding the Fourth Proportional to 866,003.40, 1,299,005.10 and 266,911.20

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Solution

The fourth proportional to 866,003.40, 1,299,005.10 and 266,911.20 is: 400,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,003.40 : 1,299,005.10 = 266,911.20 : x
  2. Step 2: Convert to fraction form
    866,003.40/1,299,005.10 = 266,911.20/x
  3. Step 3: Cross multiply
    866,003.40x = 1,299,005.10 × 266,911.20
  4. Step 4: Simplify right side
    866,003.40x = 346,719,010,047.12
  5. Step 5: Solve for x
    x = 346,719,010,047.12/866,003.40
  6. Step 6: Final answer
    x = 400,366.80

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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.