Home / 679,529.70-1,019,294.55-279,964.80

Finding the Fourth Proportional to 679,529.70, 1,019,294.55 and 279,964.80

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Solution

The fourth proportional to 679,529.70, 1,019,294.55 and 279,964.80 is: 419,947.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,529.70 : 1,019,294.55 = 279,964.80 : x
  2. Step 2: Convert to fraction form
    679,529.70/1,019,294.55 = 279,964.80/x
  3. Step 3: Cross multiply
    679,529.70x = 1,019,294.55 × 279,964.80
  4. Step 4: Simplify right side
    679,529.70x = 285,366,594,831.84
  5. Step 5: Solve for x
    x = 285,366,594,831.84/679,529.70
  6. Step 6: Final answer
    x = 419,947.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.