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Finding the Fourth Proportional to 3,653,978.70, 5,480,968.05 and 1,129,889.10

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Solution

The fourth proportional to 3,653,978.70, 5,480,968.05 and 1,129,889.10 is: 1,694,833.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,653,978.70 : 5,480,968.05 = 1,129,889.10 : x
  2. Step 2: Convert to fraction form
    3,653,978.70/5,480,968.05 = 1,129,889.10/x
  3. Step 3: Cross multiply
    3,653,978.70x = 5,480,968.05 × 1,129,889.10
  4. Step 4: Simplify right side
    3,653,978.70x = 6,192,886,057,143.26
  5. Step 5: Solve for x
    x = 6,192,886,057,143.26/3,653,978.70
  6. Step 6: Final answer
    x = 1,694,833.65

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Double scale
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Similar ratio
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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.