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Finding the Fourth Proportional to 636,447.94, 878,268.09 and 349,980.10

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Solution

The fourth proportional to 636,447.94, 878,268.09 and 349,980.10 is: 482,956.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,447.94 : 878,268.09 = 349,980.10 : x
  2. Step 2: Convert to fraction form
    636,447.94/878,268.09 = 349,980.10/x
  3. Step 3: Cross multiply
    636,447.94x = 878,268.09 × 349,980.10
  4. Step 4: Simplify right side
    636,447.94x = 307,376,353,965.01
  5. Step 5: Solve for x
    x = 307,376,353,965.01/636,447.94
  6. Step 6: Final answer
    x = 482,956.00

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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.