Home / 1,288,778.76-1,778,514.80-715,872.24

Finding the Fourth Proportional to 1,288,778.76, 1,778,514.80 and 715,872.24

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Solution

The fourth proportional to 1,288,778.76, 1,778,514.80 and 715,872.24 is: 987,903.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,778.76 : 1,778,514.80 = 715,872.24 : x
  2. Step 2: Convert to fraction form
    1,288,778.76/1,778,514.80 = 715,872.24/x
  3. Step 3: Cross multiply
    1,288,778.76x = 1,778,514.80 × 715,872.24
  4. Step 4: Simplify right side
    1,288,778.76x = 1,273,189,373,749.15
  5. Step 5: Solve for x
    x = 1,273,189,373,749.15/1,288,778.76
  6. Step 6: Final answer
    x = 987,903.75

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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.