Home / 1,260,761.38-1,739,816.22-687,801.40

Finding the Fourth Proportional to 1,260,761.38, 1,739,816.22 and 687,801.40

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Solution

The fourth proportional to 1,260,761.38, 1,739,816.22 and 687,801.40 is: 949,147.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,761.38 : 1,739,816.22 = 687,801.40 : x
  2. Step 2: Convert to fraction form
    1,260,761.38/1,739,816.22 = 687,801.40/x
  3. Step 3: Cross multiply
    1,260,761.38x = 1,739,816.22 × 687,801.40
  4. Step 4: Simplify right side
    1,260,761.38x = 1,196,648,031,858.71
  5. Step 5: Solve for x
    x = 1,196,648,031,858.71/1,260,761.38
  6. Step 6: Final answer
    x = 949,147.12

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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.