Home / 667,439.40-1,001,447.10-387,196.20

Finding the Fourth Proportional to 667,439.40, 1,001,447.10 and 387,196.20

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Solution

The fourth proportional to 667,439.40, 1,001,447.10 and 387,196.20 is: 580,961.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,439.40 : 1,001,447.10 = 387,196.20 : x
  2. Step 2: Convert to fraction form
    667,439.40/1,001,447.10 = 387,196.20/x
  3. Step 3: Cross multiply
    667,439.40x = 1,001,447.10 × 387,196.20
  4. Step 4: Simplify right side
    667,439.40x = 387,756,511,621.02
  5. Step 5: Solve for x
    x = 387,756,511,621.02/667,439.40
  6. Step 6: Final answer
    x = 580,961.38

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1.5x scale

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.