Home / 1,981,505.80-2,972,258.70-1,645,218.10

Finding the Fourth Proportional to 1,981,505.80, 2,972,258.70 and 1,645,218.10

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Solution

The fourth proportional to 1,981,505.80, 2,972,258.70 and 1,645,218.10 is: 2,467,827.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,505.80 : 2,972,258.70 = 1,645,218.10 : x
  2. Step 2: Convert to fraction form
    1,981,505.80/2,972,258.70 = 1,645,218.10/x
  3. Step 3: Cross multiply
    1,981,505.80x = 2,972,258.70 × 1,645,218.10
  4. Step 4: Simplify right side
    1,981,505.80x = 4,890,013,811,122.47
  5. Step 5: Solve for x
    x = 4,890,013,811,122.47/1,981,505.80
  6. Step 6: Final answer
    x = 2,467,827.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.