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Finding the Fourth Proportional to 636,858.32, 878,864.45 and 350,372.25

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Solution

The fourth proportional to 636,858.32, 878,864.45 and 350,372.25 is: 483,513.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,858.32 : 878,864.45 = 350,372.25 : x
  2. Step 2: Convert to fraction form
    636,858.32/878,864.45 = 350,372.25/x
  3. Step 3: Cross multiply
    636,858.32x = 878,864.45 × 350,372.25
  4. Step 4: Simplify right side
    636,858.32x = 307,929,713,039.65
  5. Step 5: Solve for x
    x = 307,929,713,039.65/636,858.32
  6. Step 6: Final answer
    x = 483,513.69

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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.