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Finding the Fourth Proportional to 719,769.60, 993,945.60 and 481,996.80

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Solution

The fourth proportional to 719,769.60, 993,945.60 and 481,996.80 is: 665,599.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,769.60 : 993,945.60 = 481,996.80 : x
  2. Step 2: Convert to fraction form
    719,769.60/993,945.60 = 481,996.80/x
  3. Step 3: Cross multiply
    719,769.60x = 993,945.60 × 481,996.80
  4. Step 4: Simplify right side
    719,769.60x = 479,078,598,574.08
  5. Step 5: Solve for x
    x = 479,078,598,574.08/719,769.60
  6. Step 6: Final answer
    x = 665,599.93

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Double scale
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1.5x scale

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.