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Finding the Fourth Proportional to 1,295,262.86, 1,787,470.56 and 722,339.30

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Solution

The fourth proportional to 1,295,262.86, 1,787,470.56 and 722,339.30 is: 996,832.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,262.86 : 1,787,470.56 = 722,339.30 : x
  2. Step 2: Convert to fraction form
    1,295,262.86/1,787,470.56 = 722,339.30/x
  3. Step 3: Cross multiply
    1,295,262.86x = 1,787,470.56 × 722,339.30
  4. Step 4: Simplify right side
    1,295,262.86x = 1,291,160,233,081.01
  5. Step 5: Solve for x
    x = 1,291,160,233,081.01/1,295,262.86
  6. Step 6: Final answer
    x = 996,832.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.