Home / 1,223,122.31-1,687,951.39-679,267.11

Finding the Fourth Proportional to 1,223,122.31, 1,687,951.39 and 679,267.11

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Solution

The fourth proportional to 1,223,122.31, 1,687,951.39 and 679,267.11 is: 937,412.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,122.31 : 1,687,951.39 = 679,267.11 : x
  2. Step 2: Convert to fraction form
    1,223,122.31/1,687,951.39 = 679,267.11/x
  3. Step 3: Cross multiply
    1,223,122.31x = 1,687,951.39 × 679,267.11
  4. Step 4: Simplify right side
    1,223,122.31x = 1,146,569,862,505.78
  5. Step 5: Solve for x
    x = 1,146,569,862,505.78/1,223,122.31
  6. Step 6: Final answer
    x = 937,412.27

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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.