Home / 431,150,887.60-646,820,809.80-139,968,458.80

Finding the Fourth Proportional to 431,150,887.60, 646,820,809.80 and 139,968,458.80

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Solution

The fourth proportional to 431,150,887.60, 646,820,809.80 and 139,968,458.80 is: 209,983,359.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,150,887.60 : 646,820,809.80 = 139,968,458.80 : x
  2. Step 2: Convert to fraction form
    431,150,887.60/646,820,809.80 = 139,968,458.80/x
  3. Step 3: Cross multiply
    431,150,887.60x = 646,820,809.80 × 139,968,458.80
  4. Step 4: Simplify right side
    431,150,887.60x = 90,534,511,867,473,936
  5. Step 5: Solve for x
    x = 90,534,511,867,473,936/431,150,887.60
  6. Step 6: Final answer
    x = 209,983,359.59

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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.