Home / 1,288,557.76-1,778,233.80-715,651.60

Finding the Fourth Proportional to 1,288,557.76, 1,778,233.80 and 715,651.60

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Solution

The fourth proportional to 1,288,557.76, 1,778,233.80 and 715,651.60 is: 987,612.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,557.76 : 1,778,233.80 = 715,651.60 : x
  2. Step 2: Convert to fraction form
    1,288,557.76/1,778,233.80 = 715,651.60/x
  3. Step 3: Cross multiply
    1,288,557.76x = 1,778,233.80 × 715,651.60
  4. Step 4: Simplify right side
    1,288,557.76x = 1,272,595,864,144.08
  5. Step 5: Solve for x
    x = 1,272,595,864,144.08/1,288,557.76
  6. Step 6: Final answer
    x = 987,612.59

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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.