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Finding the Fourth Proportional to 622,487,073.05, 859,428,344.90 and 387,882,392.57

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Solution

The fourth proportional to 622,487,073.05, 859,428,344.90 and 387,882,392.57 is: 535,524,570.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,487,073.05 : 859,428,344.90 = 387,882,392.57 : x
  2. Step 2: Convert to fraction form
    622,487,073.05/859,428,344.90 = 387,882,392.57/x
  3. Step 3: Cross multiply
    622,487,073.05x = 859,428,344.90 × 387,882,392.57
  4. Step 4: Simplify right side
    622,487,073.05x = 333,357,122,662,182,592
  5. Step 5: Solve for x
    x = 333,357,122,662,182,592/622,487,073.05
  6. Step 6: Final answer
    x = 535,524,570.86

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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.