Home / 989,138.60-1,483,500.17-279,000.56

Finding the Fourth Proportional to 989,138.60, 1,483,500.17 and 279,000.56

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Solution

The fourth proportional to 989,138.60, 1,483,500.17 and 279,000.56 is: 418,442.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,138.60 : 1,483,500.17 = 279,000.56 : x
  2. Step 2: Convert to fraction form
    989,138.60/1,483,500.17 = 279,000.56/x
  3. Step 3: Cross multiply
    989,138.60x = 1,483,500.17 × 279,000.56
  4. Step 4: Simplify right side
    989,138.60x = 413,897,369,377.59
  5. Step 5: Solve for x
    x = 413,897,369,377.59/989,138.60
  6. Step 6: Final answer
    x = 418,442.24

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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.