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Finding the Fourth Proportional to 486,736.80, 730,105.20 and 345,019.20

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Solution

The fourth proportional to 486,736.80, 730,105.20 and 345,019.20 is: 517,528.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,736.80 : 730,105.20 = 345,019.20 : x
  2. Step 2: Convert to fraction form
    486,736.80/730,105.20 = 345,019.20/x
  3. Step 3: Cross multiply
    486,736.80x = 730,105.20 × 345,019.20
  4. Step 4: Simplify right side
    486,736.80x = 251,900,312,019.84
  5. Step 5: Solve for x
    x = 251,900,312,019.84/486,736.80
  6. Step 6: Final answer
    x = 517,528.80

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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.