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Finding the Fourth Proportional to 1,260,749.50, 1,739,834.31 and 808,040.50

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Solution

The fourth proportional to 1,260,749.50, 1,739,834.31 and 808,040.50 is: 1,115,095.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,749.50 : 1,739,834.31 = 808,040.50 : x
  2. Step 2: Convert to fraction form
    1,260,749.50/1,739,834.31 = 808,040.50/x
  3. Step 3: Cross multiply
    1,260,749.50x = 1,739,834.31 × 808,040.50
  4. Step 4: Simplify right side
    1,260,749.50x = 1,405,856,585,769.56
  5. Step 5: Solve for x
    x = 1,405,856,585,769.56/1,260,749.50
  6. Step 6: Final answer
    x = 1,115,095.89

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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.