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Finding the Fourth Proportional to 561,786.30, 842,679.45 and 325,007.10

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Solution

The fourth proportional to 561,786.30, 842,679.45 and 325,007.10 is: 487,510.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,786.30 : 842,679.45 = 325,007.10 : x
  2. Step 2: Convert to fraction form
    561,786.30/842,679.45 = 325,007.10/x
  3. Step 3: Cross multiply
    561,786.30x = 842,679.45 × 325,007.10
  4. Step 4: Simplify right side
    561,786.30x = 273,876,804,274.10
  5. Step 5: Solve for x
    x = 273,876,804,274.10/561,786.30
  6. Step 6: Final answer
    x = 487,510.65

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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.