Home / 9,109,871.28-12,571,620.48-4,979,919.78

Finding the Fourth Proportional to 9,109,871.28, 12,571,620.48 and 4,979,919.78

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Solution

The fourth proportional to 9,109,871.28, 12,571,620.48 and 4,979,919.78 is: 6,872,288.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,109,871.28 : 12,571,620.48 = 4,979,919.78 : x
  2. Step 2: Convert to fraction form
    9,109,871.28/12,571,620.48 = 4,979,919.78/x
  3. Step 3: Cross multiply
    9,109,871.28x = 12,571,620.48 × 4,979,919.78
  4. Step 4: Simplify right side
    9,109,871.28x = 62,605,661,495,005.10
  5. Step 5: Solve for x
    x = 62,605,661,495,005.10/9,109,871.28
  6. Step 6: Final answer
    x = 6,872,288.27

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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.