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Finding the Fourth Proportional to 400,858,882.90, 561,967,711.10 and 400,858,882.90

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Solution

The fourth proportional to 400,858,882.90, 561,967,711.10 and 400,858,882.90 is: 561,967,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,858,882.90 : 561,967,711.10 = 400,858,882.90 : x
  2. Step 2: Convert to fraction form
    400,858,882.90/561,967,711.10 = 400,858,882.90/x
  3. Step 3: Cross multiply
    400,858,882.90x = 561,967,711.10 × 400,858,882.90
  4. Step 4: Simplify right side
    400,858,882.90x = 225,269,748,897,415,936
  5. Step 5: Solve for x
    x = 225,269,748,897,415,936/400,858,882.90
  6. Step 6: Final answer
    x = 561,967,711.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.