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Finding the Fourth Proportional to 521,218.88, 718,651.68 and 440,504

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Solution

The fourth proportional to 521,218.88, 718,651.68 and 440,504 is: 607,362.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,218.88 : 718,651.68 = 440,504 : x
  2. Step 2: Convert to fraction form
    521,218.88/718,651.68 = 440,504/x
  3. Step 3: Cross multiply
    521,218.88x = 718,651.68 × 440,504
  4. Step 4: Simplify right side
    521,218.88x = 316,568,939,646.72
  5. Step 5: Solve for x
    x = 316,568,939,646.72/521,218.88
  6. Step 6: Final answer
    x = 607,362.76

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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.