Home / 428,838,869.76-641,635,029.24-254,055,712.38

Finding the Fourth Proportional to 428,838,869.76, 641,635,029.24 and 254,055,712.38

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Solution

The fourth proportional to 428,838,869.76, 641,635,029.24 and 254,055,712.38 is: 380,121,896.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,838,869.76 : 641,635,029.24 = 254,055,712.38 : x
  2. Step 2: Convert to fraction form
    428,838,869.76/641,635,029.24 = 254,055,712.38/x
  3. Step 3: Cross multiply
    428,838,869.76x = 641,635,029.24 × 254,055,712.38
  4. Step 4: Simplify right side
    428,838,869.76x = 163,011,044,441,530,336
  5. Step 5: Solve for x
    x = 163,011,044,441,530,336/428,838,869.76
  6. Step 6: Final answer
    x = 380,121,896.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.