Home / 987,343.78-1,481,015.70-239,389.78

Finding the Fourth Proportional to 987,343.78, 1,481,015.70 and 239,389.78

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Solution

The fourth proportional to 987,343.78, 1,481,015.70 and 239,389.78 is: 359,084.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,343.78 : 1,481,015.70 = 239,389.78 : x
  2. Step 2: Convert to fraction form
    987,343.78/1,481,015.70 = 239,389.78/x
  3. Step 3: Cross multiply
    987,343.78x = 1,481,015.70 × 239,389.78
  4. Step 4: Simplify right side
    987,343.78x = 354,540,022,599.55
  5. Step 5: Solve for x
    x = 354,540,022,599.55/987,343.78
  6. Step 6: Final answer
    x = 359,084.68

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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.