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Finding the Fourth Proportional to 1,994,001.90, 2,988,961.65 and 981,566.70

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Solution

The fourth proportional to 1,994,001.90, 2,988,961.65 and 981,566.70 is: 1,471,345.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,994,001.90 : 2,988,961.65 = 981,566.70 : x
  2. Step 2: Convert to fraction form
    1,994,001.90/2,988,961.65 = 981,566.70/x
  3. Step 3: Cross multiply
    1,994,001.90x = 2,988,961.65 × 981,566.70
  4. Step 4: Simplify right side
    1,994,001.90x = 2,933,865,223,217.06
  5. Step 5: Solve for x
    x = 2,933,865,223,217.06/1,994,001.90
  6. Step 6: Final answer
    x = 1,471,345.25

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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.