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Finding the Fourth Proportional to 528,410.60, 729,190.50 and 377,759.72

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Solution

The fourth proportional to 528,410.60, 729,190.50 and 377,759.72 is: 521,296.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,410.60 : 729,190.50 = 377,759.72 : x
  2. Step 2: Convert to fraction form
    528,410.60/729,190.50 = 377,759.72/x
  3. Step 3: Cross multiply
    528,410.60x = 729,190.50 × 377,759.72
  4. Step 4: Simplify right side
    528,410.60x = 275,458,799,106.66
  5. Step 5: Solve for x
    x = 275,458,799,106.66/528,410.60
  6. Step 6: Final answer
    x = 521,296.88

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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.