Home / 887,331.70-1,330,997.55-256,266.10

Finding the Fourth Proportional to 887,331.70, 1,330,997.55 and 256,266.10

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Solution

The fourth proportional to 887,331.70, 1,330,997.55 and 256,266.10 is: 384,399.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,331.70 : 1,330,997.55 = 256,266.10 : x
  2. Step 2: Convert to fraction form
    887,331.70/1,330,997.55 = 256,266.10/x
  3. Step 3: Cross multiply
    887,331.70x = 1,330,997.55 × 256,266.10
  4. Step 4: Simplify right side
    887,331.70x = 341,089,551,248.06
  5. Step 5: Solve for x
    x = 341,089,551,248.06/887,331.70
  6. Step 6: Final answer
    x = 384,399.15

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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.