Home / 764,436.84-1,054,923.50-420,278.62

Finding the Fourth Proportional to 764,436.84, 1,054,923.50 and 420,278.62

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Solution

The fourth proportional to 764,436.84, 1,054,923.50 and 420,278.62 is: 579,984.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,436.84 : 1,054,923.50 = 420,278.62 : x
  2. Step 2: Convert to fraction form
    764,436.84/1,054,923.50 = 420,278.62/x
  3. Step 3: Cross multiply
    764,436.84x = 1,054,923.50 × 420,278.62
  4. Step 4: Simplify right side
    764,436.84x = 443,361,793,836.27
  5. Step 5: Solve for x
    x = 443,361,793,836.27/764,436.84
  6. Step 6: Final answer
    x = 579,984.86

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Double scale
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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.