Home / 812,689,328.88-1,121,492,198.76-478,183,517.04

Finding the Fourth Proportional to 812,689,328.88, 1,121,492,198.76 and 478,183,517.04

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Solution

The fourth proportional to 812,689,328.88, 1,121,492,198.76 and 478,183,517.04 is: 659,882,029.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,689,328.88 : 1,121,492,198.76 = 478,183,517.04 : x
  2. Step 2: Convert to fraction form
    812,689,328.88/1,121,492,198.76 = 478,183,517.04/x
  3. Step 3: Cross multiply
    812,689,328.88x = 1,121,492,198.76 × 478,183,517.04
  4. Step 4: Simplify right side
    812,689,328.88x = 536,279,083,935,979,520
  5. Step 5: Solve for x
    x = 536,279,083,935,979,520/812,689,328.88
  6. Step 6: Final answer
    x = 659,882,029.80

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Double scale
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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.