Home / 911,002.40-1,366,503.60-279,915.20

Finding the Fourth Proportional to 911,002.40, 1,366,503.60 and 279,915.20

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Solution

The fourth proportional to 911,002.40, 1,366,503.60 and 279,915.20 is: 419,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,002.40 : 1,366,503.60 = 279,915.20 : x
  2. Step 2: Convert to fraction form
    911,002.40/1,366,503.60 = 279,915.20/x
  3. Step 3: Cross multiply
    911,002.40x = 1,366,503.60 × 279,915.20
  4. Step 4: Simplify right side
    911,002.40x = 382,505,128,494.72
  5. Step 5: Solve for x
    x = 382,505,128,494.72/911,002.40
  6. Step 6: Final answer
    x = 419,872.80

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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.