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Finding the Fourth Proportional to 636,837.50, 878,834.44 and 350,356.91

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Solution

The fourth proportional to 636,837.50, 878,834.44 and 350,356.91 is: 483,491.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,837.50 : 878,834.44 = 350,356.91 : x
  2. Step 2: Convert to fraction form
    636,837.50/878,834.44 = 350,356.91/x
  3. Step 3: Cross multiply
    636,837.50x = 878,834.44 × 350,356.91
  4. Step 4: Simplify right side
    636,837.50x = 307,905,714,843.75
  5. Step 5: Solve for x
    x = 307,905,714,843.75/636,837.50
  6. Step 6: Final answer
    x = 483,491.81

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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.