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Finding the Fourth Proportional to 636,663.68, 878,596.30 and 350,205.56

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Solution

The fourth proportional to 636,663.68, 878,596.30 and 350,205.56 is: 483,283.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,663.68 : 878,596.30 = 350,205.56 : x
  2. Step 2: Convert to fraction form
    636,663.68/878,596.30 = 350,205.56/x
  3. Step 3: Cross multiply
    636,663.68x = 878,596.30 × 350,205.56
  4. Step 4: Simplify right side
    636,663.68x = 307,689,309,255.43
  5. Step 5: Solve for x
    x = 307,689,309,255.43/636,663.68
  6. Step 6: Final answer
    x = 483,283.90

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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.