Home / 1,149,439.40-1,586,275.58-640,141.78

Finding the Fourth Proportional to 1,149,439.40, 1,586,275.58 and 640,141.78

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Solution

The fourth proportional to 1,149,439.40, 1,586,275.58 and 640,141.78 is: 883,423.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149,439.40 : 1,586,275.58 = 640,141.78 : x
  2. Step 2: Convert to fraction form
    1,149,439.40/1,586,275.58 = 640,141.78/x
  3. Step 3: Cross multiply
    1,149,439.40x = 1,586,275.58 × 640,141.78
  4. Step 4: Simplify right side
    1,149,439.40x = 1,015,441,273,351.73
  5. Step 5: Solve for x
    x = 1,015,441,273,351.73/1,149,439.40
  6. Step 6: Final answer
    x = 883,423.06

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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.