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Finding the Fourth Proportional to 605,071,128.40, 906,331,234.20 and 605,071,128.40

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Solution

The fourth proportional to 605,071,128.40, 906,331,234.20 and 605,071,128.40 is: 906,331,234.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,071,128.40 : 906,331,234.20 = 605,071,128.40 : x
  2. Step 2: Convert to fraction form
    605,071,128.40/906,331,234.20 = 605,071,128.40/x
  3. Step 3: Cross multiply
    605,071,128.40x = 906,331,234.20 × 605,071,128.40
  4. Step 4: Simplify right side
    605,071,128.40x = 548,394,862,581,558,656
  5. Step 5: Solve for x
    x = 548,394,862,581,558,656/605,071,128.40
  6. Step 6: Final answer
    x = 906,331,234.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.