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Finding the Fourth Proportional to 540,607.20, 745,980.78 and 298,850.80

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Solution

The fourth proportional to 540,607.20, 745,980.78 and 298,850.80 is: 412,382.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,607.20 : 745,980.78 = 298,850.80 : x
  2. Step 2: Convert to fraction form
    540,607.20/745,980.78 = 298,850.80/x
  3. Step 3: Cross multiply
    540,607.20x = 745,980.78 × 298,850.80
  4. Step 4: Simplify right side
    540,607.20x = 222,936,952,887.62
  5. Step 5: Solve for x
    x = 222,936,952,887.62/540,607.20
  6. Step 6: Final answer
    x = 412,382.51

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Similar ratio
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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.