Home / 1,102,984.65-1,521,882.70-643,890.85

Finding the Fourth Proportional to 1,102,984.65, 1,521,882.70 and 643,890.85

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Solution

The fourth proportional to 1,102,984.65, 1,521,882.70 and 643,890.85 is: 888,431.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102,984.65 : 1,521,882.70 = 643,890.85 : x
  2. Step 2: Convert to fraction form
    1,102,984.65/1,521,882.70 = 643,890.85/x
  3. Step 3: Cross multiply
    1,102,984.65x = 1,521,882.70 × 643,890.85
  4. Step 4: Simplify right side
    1,102,984.65x = 979,926,350,930.72
  5. Step 5: Solve for x
    x = 979,926,350,930.72/1,102,984.65
  6. Step 6: Final answer
    x = 888,431.54

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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.