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Finding the Fourth Proportional to 636,855.32, 878,860.31 and 350,369.25

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Solution

The fourth proportional to 636,855.32, 878,860.31 and 350,369.25 is: 483,509.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,855.32 : 878,860.31 = 350,369.25 : x
  2. Step 2: Convert to fraction form
    636,855.32/878,860.31 = 350,369.25/x
  3. Step 3: Cross multiply
    636,855.32x = 878,860.31 × 350,369.25
  4. Step 4: Simplify right side
    636,855.32x = 307,925,625,917.62
  5. Step 5: Solve for x
    x = 307,925,625,917.62/636,855.32
  6. Step 6: Final answer
    x = 483,509.55

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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.