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Finding the Fourth Proportional to 6,988,720.72, 9,644,342.37 and 4,048,938.58

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Solution

The fourth proportional to 6,988,720.72, 9,644,342.37 and 4,048,938.58 is: 5,587,481.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,988,720.72 : 9,644,342.37 = 4,048,938.58 : x
  2. Step 2: Convert to fraction form
    6,988,720.72/9,644,342.37 = 4,048,938.58/x
  3. Step 3: Cross multiply
    6,988,720.72x = 9,644,342.37 × 4,048,938.58
  4. Step 4: Simplify right side
    6,988,720.72x = 39,049,349,900,621.63
  5. Step 5: Solve for x
    x = 39,049,349,900,621.63/6,988,720.72
  6. Step 6: Final answer
    x = 5,587,481.81

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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.