Home / 1,981,805.40-2,972,124.90-561,985.56

Finding the Fourth Proportional to 1,981,805.40, 2,972,124.90 and 561,985.56

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Solution

The fourth proportional to 1,981,805.40, 2,972,124.90 and 561,985.56 is: 842,812.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,805.40 : 2,972,124.90 = 561,985.56 : x
  2. Step 2: Convert to fraction form
    1,981,805.40/2,972,124.90 = 561,985.56/x
  3. Step 3: Cross multiply
    1,981,805.40x = 2,972,124.90 × 561,985.56
  4. Step 4: Simplify right side
    1,981,805.40x = 1,670,291,276,316.44
  5. Step 5: Solve for x
    x = 1,670,291,276,316.44/1,981,805.40
  6. Step 6: Final answer
    x = 842,812.96

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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.