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Finding the Fourth Proportional to 636,521.92, 878,422.80 and 350,064.16

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Solution

The fourth proportional to 636,521.92, 878,422.80 and 350,064.16 is: 483,100.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,521.92 : 878,422.80 = 350,064.16 : x
  2. Step 2: Convert to fraction form
    636,521.92/878,422.80 = 350,064.16/x
  3. Step 3: Cross multiply
    636,521.92x = 878,422.80 × 350,064.16
  4. Step 4: Simplify right side
    636,521.92x = 307,504,339,606.85
  5. Step 5: Solve for x
    x = 307,504,339,606.85/636,521.92
  6. Step 6: Final answer
    x = 483,100.94

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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.