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Finding the Fourth Proportional to 519,909.64, 717,091.48 and 328,738.50

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Solution

The fourth proportional to 519,909.64, 717,091.48 and 328,738.50 is: 453,416.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,909.64 : 717,091.48 = 328,738.50 : x
  2. Step 2: Convert to fraction form
    519,909.64/717,091.48 = 328,738.50/x
  3. Step 3: Cross multiply
    519,909.64x = 717,091.48 × 328,738.50
  4. Step 4: Simplify right side
    519,909.64x = 235,735,577,908.90
  5. Step 5: Solve for x
    x = 235,735,577,908.90/519,909.64
  6. Step 6: Final answer
    x = 453,416.44

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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.