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Finding the Fourth Proportional to 479,905.20, 719,857.80 and 472,906.80

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Solution

The fourth proportional to 479,905.20, 719,857.80 and 472,906.80 is: 709,360.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,905.20 : 719,857.80 = 472,906.80 : x
  2. Step 2: Convert to fraction form
    479,905.20/719,857.80 = 472,906.80/x
  3. Step 3: Cross multiply
    479,905.20x = 719,857.80 × 472,906.80
  4. Step 4: Simplify right side
    479,905.20x = 340,425,648,653.04
  5. Step 5: Solve for x
    x = 340,425,648,653.04/479,905.20
  6. Step 6: Final answer
    x = 709,360.20

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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.