Home / 887,416.60-1,331,124.90-256,394.20

Finding the Fourth Proportional to 887,416.60, 1,331,124.90 and 256,394.20

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Solution

The fourth proportional to 887,416.60, 1,331,124.90 and 256,394.20 is: 384,591.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,416.60 : 1,331,124.90 = 256,394.20 : x
  2. Step 2: Convert to fraction form
    887,416.60/1,331,124.90 = 256,394.20/x
  3. Step 3: Cross multiply
    887,416.60x = 1,331,124.90 × 256,394.20
  4. Step 4: Simplify right side
    887,416.60x = 341,292,703,835.58
  5. Step 5: Solve for x
    x = 341,292,703,835.58/887,416.60
  6. Step 6: Final answer
    x = 384,591.30

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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.