Home / 378,317,644.11-522,078,572.78-211,053,905.90

Finding the Fourth Proportional to 378,317,644.11, 522,078,572.78 and 211,053,905.90

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Solution

The fourth proportional to 378,317,644.11, 522,078,572.78 and 211,053,905.90 is: 291,254,515.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,317,644.11 : 522,078,572.78 = 211,053,905.90 : x
  2. Step 2: Convert to fraction form
    378,317,644.11/522,078,572.78 = 211,053,905.90/x
  3. Step 3: Cross multiply
    378,317,644.11x = 522,078,572.78 × 211,053,905.90
  4. Step 4: Simplify right side
    378,317,644.11x = 110,186,721,971,916,416
  5. Step 5: Solve for x
    x = 110,186,721,971,916,416/378,317,644.11
  6. Step 6: Final answer
    x = 291,254,515.05

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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.