Home / 520,717.40-718,556.17-291,234.95

Finding the Fourth Proportional to 520,717.40, 718,556.17 and 291,234.95

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Solution

The fourth proportional to 520,717.40, 718,556.17 and 291,234.95 is: 401,885.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,717.40 : 718,556.17 = 291,234.95 : x
  2. Step 2: Convert to fraction form
    520,717.40/718,556.17 = 291,234.95/x
  3. Step 3: Cross multiply
    520,717.40x = 718,556.17 × 291,234.95
  4. Step 4: Simplify right side
    520,717.40x = 209,268,670,242.14
  5. Step 5: Solve for x
    x = 209,268,670,242.14/520,717.40
  6. Step 6: Final answer
    x = 401,885.30

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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.