Home / 399,146,027.28-598,740,503.40-126,538,051.92

Finding the Fourth Proportional to 399,146,027.28, 598,740,503.40 and 126,538,051.92

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Solution

The fourth proportional to 399,146,027.28, 598,740,503.40 and 126,538,051.92 is: 189,813,881.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,146,027.28 : 598,740,503.40 = 126,538,051.92 : x
  2. Step 2: Convert to fraction form
    399,146,027.28/598,740,503.40 = 126,538,051.92/x
  3. Step 3: Cross multiply
    399,146,027.28x = 598,740,503.40 × 126,538,051.92
  4. Step 4: Simplify right side
    399,146,027.28x = 75,763,456,905,836,128
  5. Step 5: Solve for x
    x = 75,763,456,905,836,128/399,146,027.28
  6. Step 6: Final answer
    x = 189,813,881.96

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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.