Home / 485,650,622.31-670,416,726.11-309,675,154.47

Finding the Fourth Proportional to 485,650,622.31, 670,416,726.11 and 309,675,154.47

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Solution

The fourth proportional to 485,650,622.31, 670,416,726.11 and 309,675,154.47 is: 427,491,273.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,650,622.31 : 670,416,726.11 = 309,675,154.47 : x
  2. Step 2: Convert to fraction form
    485,650,622.31/670,416,726.11 = 309,675,154.47/x
  3. Step 3: Cross multiply
    485,650,622.31x = 670,416,726.11 × 309,675,154.47
  4. Step 4: Simplify right side
    485,650,622.31x = 207,611,403,215,837,568
  5. Step 5: Solve for x
    x = 207,611,403,215,837,568/485,650,622.31
  6. Step 6: Final answer
    x = 427,491,273.93

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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.