Home / 726,386.88-1,002,409.14-399,719.86

Finding the Fourth Proportional to 726,386.88, 1,002,409.14 and 399,719.86

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Solution

The fourth proportional to 726,386.88, 1,002,409.14 and 399,719.86 is: 551,610.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,386.88 : 1,002,409.14 = 399,719.86 : x
  2. Step 2: Convert to fraction form
    726,386.88/1,002,409.14 = 399,719.86/x
  3. Step 3: Cross multiply
    726,386.88x = 1,002,409.14 × 399,719.86
  4. Step 4: Simplify right side
    726,386.88x = 400,682,838,597.50
  5. Step 5: Solve for x
    x = 400,682,838,597.50/726,386.88
  6. Step 6: Final answer
    x = 551,610.79

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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.