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Finding the Fourth Proportional to 827,909.56, 1,247,396.71 and 748,040.32

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Solution

The fourth proportional to 827,909.56, 1,247,396.71 and 748,040.32 is: 1,127,059.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,909.56 : 1,247,396.71 = 748,040.32 : x
  2. Step 2: Convert to fraction form
    827,909.56/1,247,396.71 = 748,040.32/x
  3. Step 3: Cross multiply
    827,909.56x = 1,247,396.71 × 748,040.32
  4. Step 4: Simplify right side
    827,909.56x = 933,103,034,115.35
  5. Step 5: Solve for x
    x = 933,103,034,115.35/827,909.56
  6. Step 6: Final answer
    x = 1,127,059.14

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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.