Home / 671,874.88-1,005,445.28-419,274.24

Finding the Fourth Proportional to 671,874.88, 1,005,445.28 and 419,274.24

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Solution

The fourth proportional to 671,874.88, 1,005,445.28 and 419,274.24 is: 627,434.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,874.88 : 1,005,445.28 = 419,274.24 : x
  2. Step 2: Convert to fraction form
    671,874.88/1,005,445.28 = 419,274.24/x
  3. Step 3: Cross multiply
    671,874.88x = 1,005,445.28 × 419,274.24
  4. Step 4: Simplify right side
    671,874.88x = 421,557,305,633.59
  5. Step 5: Solve for x
    x = 421,557,305,633.59/671,874.88
  6. Step 6: Final answer
    x = 627,434.24

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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.