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Finding the Fourth Proportional to 3,988,044.81, 5,981,475.92 and 1,292,607.81

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Solution

The fourth proportional to 3,988,044.81, 5,981,475.92 and 1,292,607.81 is: 1,938,720.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988,044.81 : 5,981,475.92 = 1,292,607.81 : x
  2. Step 2: Convert to fraction form
    3,988,044.81/5,981,475.92 = 1,292,607.81/x
  3. Step 3: Cross multiply
    3,988,044.81x = 5,981,475.92 × 1,292,607.81
  4. Step 4: Simplify right side
    3,988,044.81x = 7,731,702,483,055.90
  5. Step 5: Solve for x
    x = 7,731,702,483,055.90/3,988,044.81
  6. Step 6: Final answer
    x = 1,938,720.06

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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.