Home / 1,384,073.79-1,910,019.20-772,190.15

Finding the Fourth Proportional to 1,384,073.79, 1,910,019.20 and 772,190.15

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Solution

The fourth proportional to 1,384,073.79, 1,910,019.20 and 772,190.15 is: 1,065,620.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,073.79 : 1,910,019.20 = 772,190.15 : x
  2. Step 2: Convert to fraction form
    1,384,073.79/1,910,019.20 = 772,190.15/x
  3. Step 3: Cross multiply
    1,384,073.79x = 1,910,019.20 × 772,190.15
  4. Step 4: Simplify right side
    1,384,073.79x = 1,474,898,012,550.88
  5. Step 5: Solve for x
    x = 1,474,898,012,550.88/1,384,073.79
  6. Step 6: Final answer
    x = 1,065,620.94

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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.