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Finding the Fourth Proportional to 9,979,953.86, 13,772,346.09 and 5,396,274.02

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Solution

The fourth proportional to 9,979,953.86, 13,772,346.09 and 5,396,274.02 is: 7,446,863.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979,953.86 : 13,772,346.09 = 5,396,274.02 : x
  2. Step 2: Convert to fraction form
    9,979,953.86/13,772,346.09 = 5,396,274.02/x
  3. Step 3: Cross multiply
    9,979,953.86x = 13,772,346.09 × 5,396,274.02
  4. Step 4: Simplify right side
    9,979,953.86x = 74,319,353,399,915.58
  5. Step 5: Solve for x
    x = 74,319,353,399,915.58/9,979,953.86
  6. Step 6: Final answer
    x = 7,446,863.43

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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.