Home / 865,189.76-1,297,780.52-480,757.55

Finding the Fourth Proportional to 865,189.76, 1,297,780.52 and 480,757.55

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Solution

The fourth proportional to 865,189.76, 1,297,780.52 and 480,757.55 is: 721,134.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,189.76 : 1,297,780.52 = 480,757.55 : x
  2. Step 2: Convert to fraction form
    865,189.76/1,297,780.52 = 480,757.55/x
  3. Step 3: Cross multiply
    865,189.76x = 1,297,780.52 × 480,757.55
  4. Step 4: Simplify right side
    865,189.76x = 623,917,774,340.24
  5. Step 5: Solve for x
    x = 623,917,774,340.24/865,189.76
  6. Step 6: Final answer
    x = 721,134.03

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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.