Home / 1,288,733.82-1,778,403.24-715,810.56

Finding the Fourth Proportional to 1,288,733.82, 1,778,403.24 and 715,810.56

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Solution

The fourth proportional to 1,288,733.82, 1,778,403.24 and 715,810.56 is: 987,791.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,733.82 : 1,778,403.24 = 715,810.56 : x
  2. Step 2: Convert to fraction form
    1,288,733.82/1,778,403.24 = 715,810.56/x
  3. Step 3: Cross multiply
    1,288,733.82x = 1,778,403.24 × 715,810.56
  4. Step 4: Simplify right side
    1,288,733.82x = 1,272,999,819,130.21
  5. Step 5: Solve for x
    x = 1,272,999,819,130.21/1,288,733.82
  6. Step 6: Final answer
    x = 987,791.12

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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.