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Finding the Fourth Proportional to 519,759.72, 779,639.64 and 125,775.72

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Solution

The fourth proportional to 519,759.72, 779,639.64 and 125,775.72 is: 188,663.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,759.72 : 779,639.64 = 125,775.72 : x
  2. Step 2: Convert to fraction form
    519,759.72/779,639.64 = 125,775.72/x
  3. Step 3: Cross multiply
    519,759.72x = 779,639.64 × 125,775.72
  4. Step 4: Simplify right side
    519,759.72x = 98,059,737,061.54
  5. Step 5: Solve for x
    x = 98,059,737,061.54/519,759.72
  6. Step 6: Final answer
    x = 188,663.59

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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.