Home / 1,288,626.91-1,778,305.15-715,720.39

Finding the Fourth Proportional to 1,288,626.91, 1,778,305.15 and 715,720.39

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Solution

The fourth proportional to 1,288,626.91, 1,778,305.15 and 715,720.39 is: 987,694.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,626.91 : 1,778,305.15 = 715,720.39 : x
  2. Step 2: Convert to fraction form
    1,288,626.91/1,778,305.15 = 715,720.39/x
  3. Step 3: Cross multiply
    1,288,626.91x = 1,778,305.15 × 715,720.39
  4. Step 4: Simplify right side
    1,288,626.91x = 1,272,769,255,497.01
  5. Step 5: Solve for x
    x = 1,272,769,255,497.01/1,288,626.91
  6. Step 6: Final answer
    x = 987,694.15

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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.