Home / 419,861,540.70-579,524,169.87-243,706,287.78

Finding the Fourth Proportional to 419,861,540.70, 579,524,169.87 and 243,706,287.78

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Solution

The fourth proportional to 419,861,540.70, 579,524,169.87 and 243,706,287.78 is: 336,381,569.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,861,540.70 : 579,524,169.87 = 243,706,287.78 : x
  2. Step 2: Convert to fraction form
    419,861,540.70/579,524,169.87 = 243,706,287.78/x
  3. Step 3: Cross multiply
    419,861,540.70x = 579,524,169.87 × 243,706,287.78
  4. Step 4: Simplify right side
    419,861,540.70x = 141,233,684,117,803,824
  5. Step 5: Solve for x
    x = 141,233,684,117,803,824/419,861,540.70
  6. Step 6: Final answer
    x = 336,381,569.70

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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.