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Finding the Fourth Proportional to 1,260,578.52, 1,739,609.46 and 687,621.24

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Solution

The fourth proportional to 1,260,578.52, 1,739,609.46 and 687,621.24 is: 948,923.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,578.52 : 1,739,609.46 = 687,621.24 : x
  2. Step 2: Convert to fraction form
    1,260,578.52/1,739,609.46 = 687,621.24/x
  3. Step 3: Cross multiply
    1,260,578.52x = 1,739,609.46 × 687,621.24
  4. Step 4: Simplify right side
    1,260,578.52x = 1,196,192,414,000.93
  5. Step 5: Solve for x
    x = 1,196,192,414,000.93/1,260,578.52
  6. Step 6: Final answer
    x = 948,923.37

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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.