Home / 868,977.68-1,199,236.20-487,127.12

Finding the Fourth Proportional to 868,977.68, 1,199,236.20 and 487,127.12

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Solution

The fourth proportional to 868,977.68, 1,199,236.20 and 487,127.12 is: 672,261.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,977.68 : 1,199,236.20 = 487,127.12 : x
  2. Step 2: Convert to fraction form
    868,977.68/1,199,236.20 = 487,127.12/x
  3. Step 3: Cross multiply
    868,977.68x = 1,199,236.20 × 487,127.12
  4. Step 4: Simplify right side
    868,977.68x = 584,180,476,305.74
  5. Step 5: Solve for x
    x = 584,180,476,305.74/868,977.68
  6. Step 6: Final answer
    x = 672,261.77

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.