Home / 1,981,580.40-2,972,365.14-561,648.78

Finding the Fourth Proportional to 1,981,580.40, 2,972,365.14 and 561,648.78

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Solution

The fourth proportional to 1,981,580.40, 2,972,365.14 and 561,648.78 is: 842,471.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,580.40 : 2,972,365.14 = 561,648.78 : x
  2. Step 2: Convert to fraction form
    1,981,580.40/2,972,365.14 = 561,648.78/x
  3. Step 3: Cross multiply
    1,981,580.40x = 2,972,365.14 × 561,648.78
  4. Step 4: Simplify right side
    1,981,580.40x = 1,669,425,254,595.53
  5. Step 5: Solve for x
    x = 1,669,425,254,595.53/1,981,580.40
  6. Step 6: Final answer
    x = 842,471.62

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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.