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Finding the Fourth Proportional to 521,187.52, 718,255.76 and 417,704.08

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Solution

The fourth proportional to 521,187.52, 718,255.76 and 417,704.08 is: 575,643.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,187.52 : 718,255.76 = 417,704.08 : x
  2. Step 2: Convert to fraction form
    521,187.52/718,255.76 = 417,704.08/x
  3. Step 3: Cross multiply
    521,187.52x = 718,255.76 × 417,704.08
  4. Step 4: Simplify right side
    521,187.52x = 300,018,361,435.50
  5. Step 5: Solve for x
    x = 300,018,361,435.50/521,187.52
  6. Step 6: Final answer
    x = 575,643.79

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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.