Home / 650,439.21-897,542.98-378,543.17

Finding the Fourth Proportional to 650,439.21, 897,542.98 and 378,543.17

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Solution

The fourth proportional to 650,439.21, 897,542.98 and 378,543.17 is: 522,352.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,439.21 : 897,542.98 = 378,543.17 : x
  2. Step 2: Convert to fraction form
    650,439.21/897,542.98 = 378,543.17/x
  3. Step 3: Cross multiply
    650,439.21x = 897,542.98 × 378,543.17
  4. Step 4: Simplify right side
    650,439.21x = 339,758,766,157.95
  5. Step 5: Solve for x
    x = 339,758,766,157.95/650,439.21
  6. Step 6: Final answer
    x = 522,352.83

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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.