Home / 1,288,559.12-1,778,162.88-715,636.20

Finding the Fourth Proportional to 1,288,559.12, 1,778,162.88 and 715,636.20

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Solution

The fourth proportional to 1,288,559.12, 1,778,162.88 and 715,636.20 is: 987,550.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,559.12 : 1,778,162.88 = 715,636.20 : x
  2. Step 2: Convert to fraction form
    1,288,559.12/1,778,162.88 = 715,636.20/x
  3. Step 3: Cross multiply
    1,288,559.12x = 1,778,162.88 × 715,636.20
  4. Step 4: Simplify right side
    1,288,559.12x = 1,272,517,726,424.26
  5. Step 5: Solve for x
    x = 1,272,517,726,424.26/1,288,559.12
  6. Step 6: Final answer
    x = 987,550.91

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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.