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Finding the Fourth Proportional to 519,723, 779,584.50 and 125,739

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Solution

The fourth proportional to 519,723, 779,584.50 and 125,739 is: 188,608.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,723 : 779,584.50 = 125,739 : x
  2. Step 2: Convert to fraction form
    519,723/779,584.50 = 125,739/x
  3. Step 3: Cross multiply
    519,723x = 779,584.50 × 125,739
  4. Step 4: Simplify right side
    519,723x = 98,024,175,445.50
  5. Step 5: Solve for x
    x = 98,024,175,445.50/519,723
  6. Step 6: Final answer
    x = 188,608.50

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.