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Finding the Fourth Proportional to 486,732.80, 730,099.20 and 345,015.20

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Solution

The fourth proportional to 486,732.80, 730,099.20 and 345,015.20 is: 517,522.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,732.80 : 730,099.20 = 345,015.20 : x
  2. Step 2: Convert to fraction form
    486,732.80/730,099.20 = 345,015.20/x
  3. Step 3: Cross multiply
    486,732.80x = 730,099.20 × 345,015.20
  4. Step 4: Simplify right side
    486,732.80x = 251,895,321,507.84
  5. Step 5: Solve for x
    x = 251,895,321,507.84/486,732.80
  6. Step 6: Final answer
    x = 517,522.80

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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.