Home / 1,288,797.84-1,778,491.52-715,874.56

Finding the Fourth Proportional to 1,288,797.84, 1,778,491.52 and 715,874.56

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Solution

The fourth proportional to 1,288,797.84, 1,778,491.52 and 715,874.56 is: 987,879.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,797.84 : 1,778,491.52 = 715,874.56 : x
  2. Step 2: Convert to fraction form
    1,288,797.84/1,778,491.52 = 715,874.56/x
  3. Step 3: Cross multiply
    1,288,797.84x = 1,778,491.52 × 715,874.56
  4. Step 4: Simplify right side
    1,288,797.84x = 1,273,176,834,343.73
  5. Step 5: Solve for x
    x = 1,273,176,834,343.73/1,288,797.84
  6. Step 6: Final answer
    x = 987,879.40

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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.