Home / 826,915.40-1,240,718.70-266,121.80

Finding the Fourth Proportional to 826,915.40, 1,240,718.70 and 266,121.80

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Solution

The fourth proportional to 826,915.40, 1,240,718.70 and 266,121.80 is: 399,293.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,915.40 : 1,240,718.70 = 266,121.80 : x
  2. Step 2: Convert to fraction form
    826,915.40/1,240,718.70 = 266,121.80/x
  3. Step 3: Cross multiply
    826,915.40x = 1,240,718.70 × 266,121.80
  4. Step 4: Simplify right side
    826,915.40x = 330,182,293,737.66
  5. Step 5: Solve for x
    x = 330,182,293,737.66/826,915.40
  6. Step 6: Final answer
    x = 399,293.92

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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.