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Finding the Fourth Proportional to 636,738.18, 878,684.04 and 350,252.16

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Solution

The fourth proportional to 636,738.18, 878,684.04 and 350,252.16 is: 483,339.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,738.18 : 878,684.04 = 350,252.16 : x
  2. Step 2: Convert to fraction form
    636,738.18/878,684.04 = 350,252.16/x
  3. Step 3: Cross multiply
    636,738.18x = 878,684.04 × 350,252.16
  4. Step 4: Simplify right side
    636,738.18x = 307,760,982,967.53
  5. Step 5: Solve for x
    x = 307,760,982,967.53/636,738.18
  6. Step 6: Final answer
    x = 483,339.92

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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.