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Finding the Fourth Proportional to 675,309.86, 1,012,590.80 and 276,230.86

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Solution

The fourth proportional to 675,309.86, 1,012,590.80 and 276,230.86 is: 414,193.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,309.86 : 1,012,590.80 = 276,230.86 : x
  2. Step 2: Convert to fraction form
    675,309.86/1,012,590.80 = 276,230.86/x
  3. Step 3: Cross multiply
    675,309.86x = 1,012,590.80 × 276,230.86
  4. Step 4: Simplify right side
    675,309.86x = 279,708,827,512.09
  5. Step 5: Solve for x
    x = 279,708,827,512.09/675,309.86
  6. Step 6: Final answer
    x = 414,193.31

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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.