Home / 1,391,915.21-2,087,833.93-445,342.73

Finding the Fourth Proportional to 1,391,915.21, 2,087,833.93 and 445,342.73

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Solution

The fourth proportional to 1,391,915.21, 2,087,833.93 and 445,342.73 is: 668,001.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,915.21 : 2,087,833.93 = 445,342.73 : x
  2. Step 2: Convert to fraction form
    1,391,915.21/2,087,833.93 = 445,342.73/x
  3. Step 3: Cross multiply
    1,391,915.21x = 2,087,833.93 × 445,342.73
  4. Step 4: Simplify right side
    1,391,915.21x = 929,801,650,620.30
  5. Step 5: Solve for x
    x = 929,801,650,620.30/1,391,915.21
  6. Step 6: Final answer
    x = 668,001.65

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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.