Home / 839,912.70-1,259,869.05-479,713.80

Finding the Fourth Proportional to 839,912.70, 1,259,869.05 and 479,713.80

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Solution

The fourth proportional to 839,912.70, 1,259,869.05 and 479,713.80 is: 719,570.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,912.70 : 1,259,869.05 = 479,713.80 : x
  2. Step 2: Convert to fraction form
    839,912.70/1,259,869.05 = 479,713.80/x
  3. Step 3: Cross multiply
    839,912.70x = 1,259,869.05 × 479,713.80
  4. Step 4: Simplify right side
    839,912.70x = 604,376,569,477.89
  5. Step 5: Solve for x
    x = 604,376,569,477.89/839,912.70
  6. Step 6: Final answer
    x = 719,570.70

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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.