Home / 747,146.54-1,121,316.96-387,419.90

Finding the Fourth Proportional to 747,146.54, 1,121,316.96 and 387,419.90

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Solution

The fourth proportional to 747,146.54, 1,121,316.96 and 387,419.90 is: 581,439.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,146.54 : 1,121,316.96 = 387,419.90 : x
  2. Step 2: Convert to fraction form
    747,146.54/1,121,316.96 = 387,419.90/x
  3. Step 3: Cross multiply
    747,146.54x = 1,121,316.96 × 387,419.90
  4. Step 4: Simplify right side
    747,146.54x = 434,420,499,631.33
  5. Step 5: Solve for x
    x = 434,420,499,631.33/747,146.54
  6. Step 6: Final answer
    x = 581,439.49

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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.