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Finding the Fourth Proportional to 827,908.56, 1,247,395.20 and 748,039.32

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Solution

The fourth proportional to 827,908.56, 1,247,395.20 and 748,039.32 is: 1,127,057.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,908.56 : 1,247,395.20 = 748,039.32 : x
  2. Step 2: Convert to fraction form
    827,908.56/1,247,395.20 = 748,039.32/x
  3. Step 3: Cross multiply
    827,908.56x = 1,247,395.20 × 748,039.32
  4. Step 4: Simplify right side
    827,908.56x = 933,100,657,179.26
  5. Step 5: Solve for x
    x = 933,100,657,179.26/827,908.56
  6. Step 6: Final answer
    x = 1,127,057.63

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.