Home / 753,908.40-1,040,401.66-409,744.38

Finding the Fourth Proportional to 753,908.40, 1,040,401.66 and 409,744.38

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Solution

The fourth proportional to 753,908.40, 1,040,401.66 and 409,744.38 is: 565,451.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,908.40 : 1,040,401.66 = 409,744.38 : x
  2. Step 2: Convert to fraction form
    753,908.40/1,040,401.66 = 409,744.38/x
  3. Step 3: Cross multiply
    753,908.40x = 1,040,401.66 × 409,744.38
  4. Step 4: Simplify right side
    753,908.40x = 426,298,733,127.67
  5. Step 5: Solve for x
    x = 426,298,733,127.67/753,908.40
  6. Step 6: Final answer
    x = 565,451.63

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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.