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Finding the Fourth Proportional to 528,100.76, 791,003.70 and 325,078.04

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Solution

The fourth proportional to 528,100.76, 791,003.70 and 325,078.04 is: 486,910.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,100.76 : 791,003.70 = 325,078.04 : x
  2. Step 2: Convert to fraction form
    528,100.76/791,003.70 = 325,078.04/x
  3. Step 3: Cross multiply
    528,100.76x = 791,003.70 × 325,078.04
  4. Step 4: Simplify right side
    528,100.76x = 257,137,932,428.75
  5. Step 5: Solve for x
    x = 257,137,932,428.75/528,100.76
  6. Step 6: Final answer
    x = 486,910.74

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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.