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Finding the Fourth Proportional to 636,666.36, 878,582.32 and 361,074.79

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Solution

The fourth proportional to 636,666.36, 878,582.32 and 361,074.79 is: 498,273.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,666.36 : 878,582.32 = 361,074.79 : x
  2. Step 2: Convert to fraction form
    636,666.36/878,582.32 = 361,074.79/x
  3. Step 3: Cross multiply
    636,666.36x = 878,582.32 × 361,074.79
  4. Step 4: Simplify right side
    636,666.36x = 317,233,926,691.71
  5. Step 5: Solve for x
    x = 317,233,926,691.71/636,666.36
  6. Step 6: Final answer
    x = 498,273.42

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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.