Home / 887,754.72-1,331,236.80-256,518.48

Finding the Fourth Proportional to 887,754.72, 1,331,236.80 and 256,518.48

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Solution

The fourth proportional to 887,754.72, 1,331,236.80 and 256,518.48 is: 384,663.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,754.72 : 1,331,236.80 = 256,518.48 : x
  2. Step 2: Convert to fraction form
    887,754.72/1,331,236.80 = 256,518.48/x
  3. Step 3: Cross multiply
    887,754.72x = 1,331,236.80 × 256,518.48
  4. Step 4: Simplify right side
    887,754.72x = 341,486,840,456.06
  5. Step 5: Solve for x
    x = 341,486,840,456.06/887,754.72
  6. Step 6: Final answer
    x = 384,663.50

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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.