Home / 646,729,507.70-970,235,979.15-319,361,851.70

Finding the Fourth Proportional to 646,729,507.70, 970,235,979.15 and 319,361,851.70

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Solution

The fourth proportional to 646,729,507.70, 970,235,979.15 and 319,361,851.70 is: 479,112,759.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,729,507.70 : 970,235,979.15 = 319,361,851.70 : x
  2. Step 2: Convert to fraction form
    646,729,507.70/970,235,979.15 = 319,361,851.70/x
  3. Step 3: Cross multiply
    646,729,507.70x = 970,235,979.15 × 319,361,851.70
  4. Step 4: Simplify right side
    646,729,507.70x = 309,856,358,887,306,560
  5. Step 5: Solve for x
    x = 309,856,358,887,306,560/646,729,507.70
  6. Step 6: Final answer
    x = 479,112,759.20

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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.