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Finding the Fourth Proportional to 3,889,505.72, 5,834,880.66 and 1,645,663.16

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Solution

The fourth proportional to 3,889,505.72, 5,834,880.66 and 1,645,663.16 is: 2,468,757.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889,505.72 : 5,834,880.66 = 1,645,663.16 : x
  2. Step 2: Convert to fraction form
    3,889,505.72/5,834,880.66 = 1,645,663.16/x
  3. Step 3: Cross multiply
    3,889,505.72x = 5,834,880.66 × 1,645,663.16
  4. Step 4: Simplify right side
    3,889,505.72x = 9,602,248,145,158.49
  5. Step 5: Solve for x
    x = 9,602,248,145,158.49/3,889,505.72
  6. Step 6: Final answer
    x = 2,468,757.94

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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.