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Finding the Fourth Proportional to 5,313,579.70, 7,969,778.79 and 1,901,728.30

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Solution

The fourth proportional to 5,313,579.70, 7,969,778.79 and 1,901,728.30 is: 2,852,381.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,313,579.70 : 7,969,778.79 = 1,901,728.30 : x
  2. Step 2: Convert to fraction form
    5,313,579.70/7,969,778.79 = 1,901,728.30/x
  3. Step 3: Cross multiply
    5,313,579.70x = 7,969,778.79 × 1,901,728.30
  4. Step 4: Simplify right side
    5,313,579.70x = 15,156,353,869,682.76
  5. Step 5: Solve for x
    x = 15,156,353,869,682.76/5,313,579.70
  6. Step 6: Final answer
    x = 2,852,381.02

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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.