Home / 868,986.78-1,199,251.08-487,038.24

Finding the Fourth Proportional to 868,986.78, 1,199,251.08 and 487,038.24

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Solution

The fourth proportional to 868,986.78, 1,199,251.08 and 487,038.24 is: 672,140.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,986.78 : 1,199,251.08 = 487,038.24 : x
  2. Step 2: Convert to fraction form
    868,986.78/1,199,251.08 = 487,038.24/x
  3. Step 3: Cross multiply
    868,986.78x = 1,199,251.08 × 487,038.24
  4. Step 4: Simplify right side
    868,986.78x = 584,081,135,321.30
  5. Step 5: Solve for x
    x = 584,081,135,321.30/868,986.78
  6. Step 6: Final answer
    x = 672,140.42

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Double scale
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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.