Home / 765,517.41-1,145,467.74-638,844.96

Finding the Fourth Proportional to 765,517.41, 1,145,467.74 and 638,844.96

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Solution

The fourth proportional to 765,517.41, 1,145,467.74 and 638,844.96 is: 955,923.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,517.41 : 1,145,467.74 = 638,844.96 : x
  2. Step 2: Convert to fraction form
    765,517.41/1,145,467.74 = 638,844.96/x
  3. Step 3: Cross multiply
    765,517.41x = 1,145,467.74 × 638,844.96
  4. Step 4: Simplify right side
    765,517.41x = 731,776,292,541.59
  5. Step 5: Solve for x
    x = 731,776,292,541.59/765,517.41
  6. Step 6: Final answer
    x = 955,923.78

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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.