Home / 386,969,422.35-580,703,856.10-141,305,488.68

Finding the Fourth Proportional to 386,969,422.35, 580,703,856.10 and 141,305,488.68

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Solution

The fourth proportional to 386,969,422.35, 580,703,856.10 and 141,305,488.68 is: 212,049,421.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,969,422.35 : 580,703,856.10 = 141,305,488.68 : x
  2. Step 2: Convert to fraction form
    386,969,422.35/580,703,856.10 = 141,305,488.68/x
  3. Step 3: Cross multiply
    386,969,422.35x = 580,703,856.10 × 141,305,488.68
  4. Step 4: Simplify right side
    386,969,422.35x = 82,056,642,164,217,632
  5. Step 5: Solve for x
    x = 82,056,642,164,217,632/386,969,422.35
  6. Step 6: Final answer
    x = 212,049,421.54

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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.