Home / 5,428,915.75-8,143,368.36-1,385,403.58

Finding the Fourth Proportional to 5,428,915.75, 8,143,368.36 and 1,385,403.58

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Solution

The fourth proportional to 5,428,915.75, 8,143,368.36 and 1,385,403.58 is: 2,078,104.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428,915.75 : 8,143,368.36 = 1,385,403.58 : x
  2. Step 2: Convert to fraction form
    5,428,915.75/8,143,368.36 = 1,385,403.58/x
  3. Step 3: Cross multiply
    5,428,915.75x = 8,143,368.36 × 1,385,403.58
  4. Step 4: Simplify right side
    5,428,915.75x = 11,281,851,679,202.73
  5. Step 5: Solve for x
    x = 11,281,851,679,202.73/5,428,915.75
  6. Step 6: Final answer
    x = 2,078,104.03

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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.