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Finding the Fourth Proportional to 519,910.64, 717,092.86 and 328,739.50

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Solution

The fourth proportional to 519,910.64, 717,092.86 and 328,739.50 is: 453,417.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,910.64 : 717,092.86 = 328,739.50 : x
  2. Step 2: Convert to fraction form
    519,910.64/717,092.86 = 328,739.50/x
  3. Step 3: Cross multiply
    519,910.64x = 717,092.86 × 328,739.50
  4. Step 4: Simplify right side
    519,910.64x = 235,736,748,249.97
  5. Step 5: Solve for x
    x = 235,736,748,249.97/519,910.64
  6. Step 6: Final answer
    x = 453,417.82

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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.