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Finding the Fourth Proportional to 480,774.28, 662,865.82 and 308,388.52

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Solution

The fourth proportional to 480,774.28, 662,865.82 and 308,388.52 is: 425,189.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,774.28 : 662,865.82 = 308,388.52 : x
  2. Step 2: Convert to fraction form
    480,774.28/662,865.82 = 308,388.52/x
  3. Step 3: Cross multiply
    480,774.28x = 662,865.82 × 308,388.52
  4. Step 4: Simplify right side
    480,774.28x = 204,420,209,188.39
  5. Step 5: Solve for x
    x = 204,420,209,188.39/480,774.28
  6. Step 6: Final answer
    x = 425,189.57

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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.