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Finding the Fourth Proportional to 877,879.96, 1,317,373.48 and 345,331.78

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Solution

The fourth proportional to 877,879.96, 1,317,373.48 and 345,331.78 is: 518,215.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,879.96 : 1,317,373.48 = 345,331.78 : x
  2. Step 2: Convert to fraction form
    877,879.96/1,317,373.48 = 345,331.78/x
  3. Step 3: Cross multiply
    877,879.96x = 1,317,373.48 × 345,331.78
  4. Step 4: Simplify right side
    877,879.96x = 454,930,928,773.19
  5. Step 5: Solve for x
    x = 454,930,928,773.19/877,879.96
  6. Step 6: Final answer
    x = 518,215.42

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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.