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Finding the Fourth Proportional to 887,262.60, 1,330,893.90 and 256,240.20

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Solution

The fourth proportional to 887,262.60, 1,330,893.90 and 256,240.20 is: 384,360.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,262.60 : 1,330,893.90 = 256,240.20 : x
  2. Step 2: Convert to fraction form
    887,262.60/1,330,893.90 = 256,240.20/x
  3. Step 3: Cross multiply
    887,262.60x = 1,330,893.90 × 256,240.20
  4. Step 4: Simplify right side
    887,262.60x = 341,028,519,114.78
  5. Step 5: Solve for x
    x = 341,028,519,114.78/887,262.60
  6. Step 6: Final answer
    x = 384,360.30

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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.