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Finding the Fourth Proportional to 482,965.60, 724,448.40 and 305,672.80

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Solution

The fourth proportional to 482,965.60, 724,448.40 and 305,672.80 is: 458,509.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,965.60 : 724,448.40 = 305,672.80 : x
  2. Step 2: Convert to fraction form
    482,965.60/724,448.40 = 305,672.80/x
  3. Step 3: Cross multiply
    482,965.60x = 724,448.40 × 305,672.80
  4. Step 4: Simplify right side
    482,965.60x = 221,444,170,883.52
  5. Step 5: Solve for x
    x = 221,444,170,883.52/482,965.60
  6. Step 6: Final answer
    x = 458,509.20

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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.