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Finding the Fourth Proportional to 519,739, 779,608.52 and 125,755

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Solution

The fourth proportional to 519,739, 779,608.52 and 125,755 is: 188,632.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,739 : 779,608.52 = 125,755 : x
  2. Step 2: Convert to fraction form
    519,739/779,608.52 = 125,755/x
  3. Step 3: Cross multiply
    519,739x = 779,608.52 × 125,755
  4. Step 4: Simplify right side
    519,739x = 98,039,668,803.83
  5. Step 5: Solve for x
    x = 98,039,668,803.83/519,739
  6. Step 6: Final answer
    x = 188,632.50

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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.