Home / 877,379.20-1,315,958.64-278,402.56

Finding the Fourth Proportional to 877,379.20, 1,315,958.64 and 278,402.56

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Solution

The fourth proportional to 877,379.20, 1,315,958.64 and 278,402.56 is: 417,568.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,379.20 : 1,315,958.64 = 278,402.56 : x
  2. Step 2: Convert to fraction form
    877,379.20/1,315,958.64 = 278,402.56/x
  3. Step 3: Cross multiply
    877,379.20x = 1,315,958.64 × 278,402.56
  4. Step 4: Simplify right side
    877,379.20x = 366,366,254,230.12
  5. Step 5: Solve for x
    x = 366,366,254,230.12/877,379.20
  6. Step 6: Final answer
    x = 417,568.88

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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.