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Finding the Fourth Proportional to 636,530.68, 878,394.81 and 350,050.78

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Solution

The fourth proportional to 636,530.68, 878,394.81 and 350,050.78 is: 483,060.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,530.68 : 878,394.81 = 350,050.78 : x
  2. Step 2: Convert to fraction form
    636,530.68/878,394.81 = 350,050.78/x
  3. Step 3: Cross multiply
    636,530.68x = 878,394.81 × 350,050.78
  4. Step 4: Simplify right side
    636,530.68x = 307,482,788,388.45
  5. Step 5: Solve for x
    x = 307,482,788,388.45/636,530.68
  6. Step 6: Final answer
    x = 483,060.44

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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.