Home / 636,936.40-878,962.12-350,439.12

Finding the Fourth Proportional to 636,936.40, 878,962.12 and 350,439.12

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Solution

The fourth proportional to 636,936.40, 878,962.12 and 350,439.12 is: 483,600.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,936.40 : 878,962.12 = 350,439.12 : x
  2. Step 2: Convert to fraction form
    636,936.40/878,962.12 = 350,439.12/x
  3. Step 3: Cross multiply
    636,936.40x = 878,962.12 × 350,439.12
  4. Step 4: Simplify right side
    636,936.40x = 308,022,711,846.13
  5. Step 5: Solve for x
    x = 308,022,711,846.13/636,936.40
  6. Step 6: Final answer
    x = 483,600.42

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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.