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Finding the Fourth Proportional to 636,664.94, 878,338.35 and 360,964.73

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Solution

The fourth proportional to 636,664.94, 878,338.35 and 360,964.73 is: 497,984.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,664.94 : 878,338.35 = 360,964.73 : x
  2. Step 2: Convert to fraction form
    636,664.94/878,338.35 = 360,964.73/x
  3. Step 3: Cross multiply
    636,664.94x = 878,338.35 × 360,964.73
  4. Step 4: Simplify right side
    636,664.94x = 317,049,163,559.10
  5. Step 5: Solve for x
    x = 317,049,163,559.10/636,664.94
  6. Step 6: Final answer
    x = 497,984.33

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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.