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Finding the Fourth Proportional to 570,261,107.09, 787,315,755.53 and 391,952,022.77

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Solution

The fourth proportional to 570,261,107.09, 787,315,755.53 and 391,952,022.77 is: 541,138,084.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,261,107.09 : 787,315,755.53 = 391,952,022.77 : x
  2. Step 2: Convert to fraction form
    570,261,107.09/787,315,755.53 = 391,952,022.77/x
  3. Step 3: Cross multiply
    570,261,107.09x = 787,315,755.53 × 391,952,022.77
  4. Step 4: Simplify right side
    570,261,107.09x = 308,590,002,938,674,304
  5. Step 5: Solve for x
    x = 308,590,002,938,674,304/570,261,107.09
  6. Step 6: Final answer
    x = 541,138,084.12

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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.