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Finding the Fourth Proportional to 470,489.78, 648,088.70 and 379,591.38

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Solution

The fourth proportional to 470,489.78, 648,088.70 and 379,591.38 is: 522,878.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,489.78 : 648,088.70 = 379,591.38 : x
  2. Step 2: Convert to fraction form
    470,489.78/648,088.70 = 379,591.38/x
  3. Step 3: Cross multiply
    470,489.78x = 648,088.70 × 379,591.38
  4. Step 4: Simplify right side
    470,489.78x = 246,008,882,097.45
  5. Step 5: Solve for x
    x = 246,008,882,097.45/470,489.78
  6. Step 6: Final answer
    x = 522,878.27

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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.