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Finding the Fourth Proportional to 1,972,907.42, 2,720,149.76 and 1,508,337.02

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Solution

The fourth proportional to 1,972,907.42, 2,720,149.76 and 1,508,337.02 is: 2,079,622.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972,907.42 : 2,720,149.76 = 1,508,337.02 : x
  2. Step 2: Convert to fraction form
    1,972,907.42/2,720,149.76 = 1,508,337.02/x
  3. Step 3: Cross multiply
    1,972,907.42x = 2,720,149.76 × 1,508,337.02
  4. Step 4: Simplify right side
    1,972,907.42x = 4,102,902,561,809.68
  5. Step 5: Solve for x
    x = 4,102,902,561,809.68/1,972,907.42
  6. Step 6: Final answer
    x = 2,079,622.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.