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Finding the Fourth Proportional to 470,762.60, 649,588.26 and 279,706.28

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Solution

The fourth proportional to 470,762.60, 649,588.26 and 279,706.28 is: 385,956.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,762.60 : 649,588.26 = 279,706.28 : x
  2. Step 2: Convert to fraction form
    470,762.60/649,588.26 = 279,706.28/x
  3. Step 3: Cross multiply
    470,762.60x = 649,588.26 × 279,706.28
  4. Step 4: Simplify right side
    470,762.60x = 181,693,915,736.27
  5. Step 5: Solve for x
    x = 181,693,915,736.27/470,762.60
  6. Step 6: Final answer
    x = 385,956.56

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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.