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Finding the Fourth Proportional to 638,087.68, 880,500.84 and 376,402.20

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Solution

The fourth proportional to 638,087.68, 880,500.84 and 376,402.20 is: 519,399.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,087.68 : 880,500.84 = 376,402.20 : x
  2. Step 2: Convert to fraction form
    638,087.68/880,500.84 = 376,402.20/x
  3. Step 3: Cross multiply
    638,087.68x = 880,500.84 × 376,402.20
  4. Step 4: Simplify right side
    638,087.68x = 331,422,453,277.85
  5. Step 5: Solve for x
    x = 331,422,453,277.85/638,087.68
  6. Step 6: Final answer
    x = 519,399.55

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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.