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Finding the Fourth Proportional to 691,571,342.86, 954,391,216.49 and 378,298,387.78

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Solution

The fourth proportional to 691,571,342.86, 954,391,216.49 and 378,298,387.78 is: 522,064,226.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,571,342.86 : 954,391,216.49 = 378,298,387.78 : x
  2. Step 2: Convert to fraction form
    691,571,342.86/954,391,216.49 = 378,298,387.78/x
  3. Step 3: Cross multiply
    691,571,342.86x = 954,391,216.49 × 378,298,387.78
  4. Step 4: Simplify right side
    691,571,342.86x = 361,044,658,507,668,416
  5. Step 5: Solve for x
    x = 361,044,658,507,668,416/691,571,342.86
  6. Step 6: Final answer
    x = 522,064,226.97

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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.