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Finding the Fourth Proportional to 636,597.31, 878,511.61 and 350,122.18

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Solution

The fourth proportional to 636,597.31, 878,511.61 and 350,122.18 is: 483,172.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,597.31 : 878,511.61 = 350,122.18 : x
  2. Step 2: Convert to fraction form
    636,597.31/878,511.61 = 350,122.18/x
  3. Step 3: Cross multiply
    636,597.31x = 878,511.61 × 350,122.18
  4. Step 4: Simplify right side
    636,597.31x = 307,586,396,976.93
  5. Step 5: Solve for x
    x = 307,586,396,976.93/636,597.31
  6. Step 6: Final answer
    x = 483,172.63

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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.