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Finding the Fourth Proportional to 638,007.36, 880,443.12 and 366,118.02

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Solution

The fourth proportional to 638,007.36, 880,443.12 and 366,118.02 is: 505,238.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,007.36 : 880,443.12 = 366,118.02 : x
  2. Step 2: Convert to fraction form
    638,007.36/880,443.12 = 366,118.02/x
  3. Step 3: Cross multiply
    638,007.36x = 880,443.12 × 366,118.02
  4. Step 4: Simplify right side
    638,007.36x = 322,346,091,817.02
  5. Step 5: Solve for x
    x = 322,346,091,817.02/638,007.36
  6. Step 6: Final answer
    x = 505,238.83

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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.