Home / 999,987.12-1,379,982.96-547,279.20

Finding the Fourth Proportional to 999,987.12, 1,379,982.96 and 547,279.20

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Solution

The fourth proportional to 999,987.12, 1,379,982.96 and 547,279.20 is: 755,245.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,987.12 : 1,379,982.96 = 547,279.20 : x
  2. Step 2: Convert to fraction form
    999,987.12/1,379,982.96 = 547,279.20/x
  3. Step 3: Cross multiply
    999,987.12x = 1,379,982.96 × 547,279.20
  4. Step 4: Simplify right side
    999,987.12x = 755,235,970,362.43
  5. Step 5: Solve for x
    x = 755,235,970,362.43/999,987.12
  6. Step 6: Final answer
    x = 755,245.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.