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Finding the Fourth Proportional to 3,653,643.80, 5,123,499.40 and 3,653,643.80

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Solution

The fourth proportional to 3,653,643.80, 5,123,499.40 and 3,653,643.80 is: 5,123,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,653,643.80 : 5,123,499.40 = 3,653,643.80 : x
  2. Step 2: Convert to fraction form
    3,653,643.80/5,123,499.40 = 3,653,643.80/x
  3. Step 3: Cross multiply
    3,653,643.80x = 5,123,499.40 × 3,653,643.80
  4. Step 4: Simplify right side
    3,653,643.80x = 18,719,441,817,113.72
  5. Step 5: Solve for x
    x = 18,719,441,817,113.72/3,653,643.80
  6. Step 6: Final answer
    x = 5,123,499.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.