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Finding the Fourth Proportional to 520,046.55, 780,069.83 and 126,062.55

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Solution

The fourth proportional to 520,046.55, 780,069.83 and 126,062.55 is: 189,093.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,046.55 : 780,069.83 = 126,062.55 : x
  2. Step 2: Convert to fraction form
    520,046.55/780,069.83 = 126,062.55/x
  3. Step 3: Cross multiply
    520,046.55x = 780,069.83 × 126,062.55
  4. Step 4: Simplify right side
    520,046.55x = 98,337,591,317.55
  5. Step 5: Solve for x
    x = 98,337,591,317.55/520,046.55
  6. Step 6: Final answer
    x = 189,093.83

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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.