Home / 667,984.12-921,799.02-381,498.28

Finding the Fourth Proportional to 667,984.12, 921,799.02 and 381,498.28

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Solution

The fourth proportional to 667,984.12, 921,799.02 and 381,498.28 is: 526,456.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,984.12 : 921,799.02 = 381,498.28 : x
  2. Step 2: Convert to fraction form
    667,984.12/921,799.02 = 381,498.28/x
  3. Step 3: Cross multiply
    667,984.12x = 921,799.02 × 381,498.28
  4. Step 4: Simplify right side
    667,984.12x = 351,664,740,635.69
  5. Step 5: Solve for x
    x = 351,664,740,635.69/667,984.12
  6. Step 6: Final answer
    x = 526,456.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.