Home / 646,729,513.20-970,235,987.40-319,361,857.20

Finding the Fourth Proportional to 646,729,513.20, 970,235,987.40 and 319,361,857.20

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Solution

The fourth proportional to 646,729,513.20, 970,235,987.40 and 319,361,857.20 is: 479,112,767.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,729,513.20 : 970,235,987.40 = 319,361,857.20 : x
  2. Step 2: Convert to fraction form
    646,729,513.20/970,235,987.40 = 319,361,857.20/x
  3. Step 3: Cross multiply
    646,729,513.20x = 970,235,987.40 × 319,361,857.20
  4. Step 4: Simplify right side
    646,729,513.20x = 309,856,366,858,339,776
  5. Step 5: Solve for x
    x = 309,856,366,858,339,776/646,729,513.20
  6. Step 6: Final answer
    x = 479,112,767.45

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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.