Home / 887,503.80-1,331,255.70-256,438.20

Finding the Fourth Proportional to 887,503.80, 1,331,255.70 and 256,438.20

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Solution

The fourth proportional to 887,503.80, 1,331,255.70 and 256,438.20 is: 384,657.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,503.80 : 1,331,255.70 = 256,438.20 : x
  2. Step 2: Convert to fraction form
    887,503.80/1,331,255.70 = 256,438.20/x
  3. Step 3: Cross multiply
    887,503.80x = 1,331,255.70 × 256,438.20
  4. Step 4: Simplify right side
    887,503.80x = 341,384,815,447.74
  5. Step 5: Solve for x
    x = 341,384,815,447.74/887,503.80
  6. Step 6: Final answer
    x = 384,657.30

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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.