Home / 792,115.30-1,188,756.15-319,140.10

Finding the Fourth Proportional to 792,115.30, 1,188,756.15 and 319,140.10

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Solution

The fourth proportional to 792,115.30, 1,188,756.15 and 319,140.10 is: 478,945.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,115.30 : 1,188,756.15 = 319,140.10 : x
  2. Step 2: Convert to fraction form
    792,115.30/1,188,756.15 = 319,140.10/x
  3. Step 3: Cross multiply
    792,115.30x = 1,188,756.15 × 319,140.10
  4. Step 4: Simplify right side
    792,115.30x = 379,379,756,586.62
  5. Step 5: Solve for x
    x = 379,379,756,586.62/792,115.30
  6. Step 6: Final answer
    x = 478,945.12

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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.