Home / 671,869.40-1,005,437.03-419,268.74

Finding the Fourth Proportional to 671,869.40, 1,005,437.03 and 419,268.74

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Solution

The fourth proportional to 671,869.40, 1,005,437.03 and 419,268.74 is: 627,425.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,869.40 : 1,005,437.03 = 419,268.74 : x
  2. Step 2: Convert to fraction form
    671,869.40/1,005,437.03 = 419,268.74/x
  3. Step 3: Cross multiply
    671,869.40x = 1,005,437.03 × 419,268.74
  4. Step 4: Simplify right side
    671,869.40x = 421,548,309,593.91
  5. Step 5: Solve for x
    x = 421,548,309,593.91/671,869.40
  6. Step 6: Final answer
    x = 627,425.97

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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.