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Finding the Fourth Proportional to 409,554,018.80, 614,331,028.20 and 409,554,018.80

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Solution

The fourth proportional to 409,554,018.80, 614,331,028.20 and 409,554,018.80 is: 614,331,028.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,554,018.80 : 614,331,028.20 = 409,554,018.80 : x
  2. Step 2: Convert to fraction form
    409,554,018.80/614,331,028.20 = 409,554,018.80/x
  3. Step 3: Cross multiply
    409,554,018.80x = 614,331,028.20 × 409,554,018.80
  4. Step 4: Simplify right side
    409,554,018.80x = 251,601,741,472,846,144
  5. Step 5: Solve for x
    x = 251,601,741,472,846,144/409,554,018.80
  6. Step 6: Final answer
    x = 614,331,028.20

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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.