Home / 781,874.82-1,172,549.79-497,389.86

Finding the Fourth Proportional to 781,874.82, 1,172,549.79 and 497,389.86

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Solution

The fourth proportional to 781,874.82, 1,172,549.79 and 497,389.86 is: 745,917.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,874.82 : 1,172,549.79 = 497,389.86 : x
  2. Step 2: Convert to fraction form
    781,874.82/1,172,549.79 = 497,389.86/x
  3. Step 3: Cross multiply
    781,874.82x = 1,172,549.79 × 497,389.86
  4. Step 4: Simplify right side
    781,874.82x = 583,214,375,891.13
  5. Step 5: Solve for x
    x = 583,214,375,891.13/781,874.82
  6. Step 6: Final answer
    x = 745,917.84

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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.