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Finding the Fourth Proportional to 636,873.59, 878,892.50 and 346,486.79

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Solution

The fourth proportional to 636,873.59, 878,892.50 and 346,486.79 is: 478,155.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,873.59 : 878,892.50 = 346,486.79 : x
  2. Step 2: Convert to fraction form
    636,873.59/878,892.50 = 346,486.79/x
  3. Step 3: Cross multiply
    636,873.59x = 878,892.50 × 346,486.79
  4. Step 4: Simplify right side
    636,873.59x = 304,524,644,143.52
  5. Step 5: Solve for x
    x = 304,524,644,143.52/636,873.59
  6. Step 6: Final answer
    x = 478,155.55

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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.