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Finding the Fourth Proportional to 1,279,785.87, 1,766,031.80 and 735,835.23

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Solution

The fourth proportional to 1,279,785.87, 1,766,031.80 and 735,835.23 is: 1,015,410.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,785.87 : 1,766,031.80 = 735,835.23 : x
  2. Step 2: Convert to fraction form
    1,279,785.87/1,766,031.80 = 735,835.23/x
  3. Step 3: Cross multiply
    1,279,785.87x = 1,766,031.80 × 735,835.23
  4. Step 4: Simplify right side
    1,279,785.87x = 1,299,508,412,061.14
  5. Step 5: Solve for x
    x = 1,299,508,412,061.14/1,279,785.87
  6. Step 6: Final answer
    x = 1,015,410.81

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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.