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Finding the Fourth Proportional to 538,800,943.80, 808,201,415.70 and 409,660,780.80

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Solution

The fourth proportional to 538,800,943.80, 808,201,415.70 and 409,660,780.80 is: 614,491,171.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,800,943.80 : 808,201,415.70 = 409,660,780.80 : x
  2. Step 2: Convert to fraction form
    538,800,943.80/808,201,415.70 = 409,660,780.80/x
  3. Step 3: Cross multiply
    538,800,943.80x = 808,201,415.70 × 409,660,780.80
  4. Step 4: Simplify right side
    538,800,943.80x = 331,088,422,999,327,424
  5. Step 5: Solve for x
    x = 331,088,422,999,327,424/538,800,943.80
  6. Step 6: Final answer
    x = 614,491,171.20

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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.