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Finding the Fourth Proportional to 520,860.36, 781,313.22 and 254,844.84

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Solution

The fourth proportional to 520,860.36, 781,313.22 and 254,844.84 is: 382,278.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,860.36 : 781,313.22 = 254,844.84 : x
  2. Step 2: Convert to fraction form
    520,860.36/781,313.22 = 254,844.84/x
  3. Step 3: Cross multiply
    520,860.36x = 781,313.22 × 254,844.84
  4. Step 4: Simplify right side
    520,860.36x = 199,113,642,540.79
  5. Step 5: Solve for x
    x = 199,113,642,540.79/520,860.36
  6. Step 6: Final answer
    x = 382,278.36

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1.5x scale

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.