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Finding the Fourth Proportional to 636,684.84, 878,610.65 and 350,198.78

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Solution

The fourth proportional to 636,684.84, 878,610.65 and 350,198.78 is: 483,266.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,684.84 : 878,610.65 = 350,198.78 : x
  2. Step 2: Convert to fraction form
    636,684.84/878,610.65 = 350,198.78/x
  3. Step 3: Cross multiply
    636,684.84x = 878,610.65 × 350,198.78
  4. Step 4: Simplify right side
    636,684.84x = 307,688,371,580.96
  5. Step 5: Solve for x
    x = 307,688,371,580.96/636,684.84
  6. Step 6: Final answer
    x = 483,266.37

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1.5x scale

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.