Home / 1,225,183.92-1,690,506.04-715,787.88

Finding the Fourth Proportional to 1,225,183.92, 1,690,506.04 and 715,787.88

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Solution

The fourth proportional to 1,225,183.92, 1,690,506.04 and 715,787.88 is: 987,642.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,183.92 : 1,690,506.04 = 715,787.88 : x
  2. Step 2: Convert to fraction form
    1,225,183.92/1,690,506.04 = 715,787.88/x
  3. Step 3: Cross multiply
    1,225,183.92x = 1,690,506.04 × 715,787.88
  4. Step 4: Simplify right side
    1,225,183.92x = 1,210,043,734,498.80
  5. Step 5: Solve for x
    x = 1,210,043,734,498.80/1,225,183.92
  6. Step 6: Final answer
    x = 987,642.52

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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.