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Finding the Fourth Proportional to 519,755.50, 717,265.53 and 290,322.44

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Solution

The fourth proportional to 519,755.50, 717,265.53 and 290,322.44 is: 400,646.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,755.50 : 717,265.53 = 290,322.44 : x
  2. Step 2: Convert to fraction form
    519,755.50/717,265.53 = 290,322.44/x
  3. Step 3: Cross multiply
    519,755.50x = 717,265.53 × 290,322.44
  4. Step 4: Simplify right side
    519,755.50x = 208,238,278,797.49
  5. Step 5: Solve for x
    x = 208,238,278,797.49/519,755.50
  6. Step 6: Final answer
    x = 400,646.61

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1.5x scale

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.