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Finding the Fourth Proportional to 3,979,505.79, 5,490,158.99 and 2,448,955.71

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Solution

The fourth proportional to 3,979,505.79, 5,490,158.99 and 2,448,955.71 is: 3,378,599.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979,505.79 : 5,490,158.99 = 2,448,955.71 : x
  2. Step 2: Convert to fraction form
    3,979,505.79/5,490,158.99 = 2,448,955.71/x
  3. Step 3: Cross multiply
    3,979,505.79x = 5,490,158.99 × 2,448,955.71
  4. Step 4: Simplify right side
    3,979,505.79x = 13,445,156,195,123.55
  5. Step 5: Solve for x
    x = 13,445,156,195,123.55/3,979,505.79
  6. Step 6: Final answer
    x = 3,378,599.48

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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.