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Finding the Fourth Proportional to 636,680.42, 878,600.64 and 350,200.50

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Solution

The fourth proportional to 636,680.42, 878,600.64 and 350,200.50 is: 483,266.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,680.42 : 878,600.64 = 350,200.50 : x
  2. Step 2: Convert to fraction form
    636,680.42/878,600.64 = 350,200.50/x
  3. Step 3: Cross multiply
    636,680.42x = 878,600.64 × 350,200.50
  4. Step 4: Simplify right side
    636,680.42x = 307,686,383,428.32
  5. Step 5: Solve for x
    x = 307,686,383,428.32/636,680.42
  6. Step 6: Final answer
    x = 483,266.60

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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.