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Finding the Fourth Proportional to 636,491.88, 878,365.08 and 350,013.96

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Solution

The fourth proportional to 636,491.88, 878,365.08 and 350,013.96 is: 483,022.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,491.88 : 878,365.08 = 350,013.96 : x
  2. Step 2: Convert to fraction form
    636,491.88/878,365.08 = 350,013.96/x
  3. Step 3: Cross multiply
    636,491.88x = 878,365.08 × 350,013.96
  4. Step 4: Simplify right side
    636,491.88x = 307,440,039,976.52
  5. Step 5: Solve for x
    x = 307,440,039,976.52/636,491.88
  6. Step 6: Final answer
    x = 483,022.72

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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.