Home / 1,240,787.72-1,711,851-811,319.24

Finding the Fourth Proportional to 1,240,787.72, 1,711,851 and 811,319.24

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Solution

The fourth proportional to 1,240,787.72, 1,711,851 and 811,319.24 is: 1,119,335.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,787.72 : 1,711,851 = 811,319.24 : x
  2. Step 2: Convert to fraction form
    1,240,787.72/1,711,851 = 811,319.24/x
  3. Step 3: Cross multiply
    1,240,787.72x = 1,711,851 × 811,319.24
  4. Step 4: Simplify right side
    1,240,787.72x = 1,388,857,643,753.98
  5. Step 5: Solve for x
    x = 1,388,857,643,753.98/1,240,787.72
  6. Step 6: Final answer
    x = 1,119,335.42

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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.