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Finding the Fourth Proportional to 1,981,749.85, 2,971,895.67 and 684,572.15

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Solution

The fourth proportional to 1,981,749.85, 2,971,895.67 and 684,572.15 is: 1,026,606.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,749.85 : 2,971,895.67 = 684,572.15 : x
  2. Step 2: Convert to fraction form
    1,981,749.85/2,971,895.67 = 684,572.15/x
  3. Step 3: Cross multiply
    1,981,749.85x = 2,971,895.67 × 684,572.15
  4. Step 4: Simplify right side
    1,981,749.85x = 2,034,477,007,458.87
  5. Step 5: Solve for x
    x = 2,034,477,007,458.87/1,981,749.85
  6. Step 6: Final answer
    x = 1,026,606.37

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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.