Home / 408,475,318.57-563,618,845.22-243,478,240.81

Finding the Fourth Proportional to 408,475,318.57, 563,618,845.22 and 243,478,240.81

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Solution

The fourth proportional to 408,475,318.57, 563,618,845.22 and 243,478,240.81 is: 335,954,018.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,475,318.57 : 563,618,845.22 = 243,478,240.81 : x
  2. Step 2: Convert to fraction form
    408,475,318.57/563,618,845.22 = 243,478,240.81/x
  3. Step 3: Cross multiply
    408,475,318.57x = 563,618,845.22 × 243,478,240.81
  4. Step 4: Simplify right side
    408,475,318.57x = 137,228,924,918,902,848
  5. Step 5: Solve for x
    x = 137,228,924,918,902,848/408,475,318.57
  6. Step 6: Final answer
    x = 335,954,018.96

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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.