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Finding the Fourth Proportional to 636,724.80, 878,675.31 and 350,238.60

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Solution

The fourth proportional to 636,724.80, 878,675.31 and 350,238.60 is: 483,326.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,724.80 : 878,675.31 = 350,238.60 : x
  2. Step 2: Convert to fraction form
    636,724.80/878,675.31 = 350,238.60/x
  3. Step 3: Cross multiply
    636,724.80x = 878,675.31 × 350,238.60
  4. Step 4: Simplify right side
    636,724.80x = 307,746,010,428.97
  5. Step 5: Solve for x
    x = 307,746,010,428.97/636,724.80
  6. Step 6: Final answer
    x = 483,326.56

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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.