Home / 392,126,629.14-540,138,190.05-299,145,711.78

Finding the Fourth Proportional to 392,126,629.14, 540,138,190.05 and 299,145,711.78

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Solution

The fourth proportional to 392,126,629.14, 540,138,190.05 and 299,145,711.78 is: 412,060,827.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,126,629.14 : 540,138,190.05 = 299,145,711.78 : x
  2. Step 2: Convert to fraction form
    392,126,629.14/540,138,190.05 = 299,145,711.78/x
  3. Step 3: Cross multiply
    392,126,629.14x = 540,138,190.05 × 299,145,711.78
  4. Step 4: Simplify right side
    392,126,629.14x = 161,580,023,322,068,128
  5. Step 5: Solve for x
    x = 161,580,023,322,068,128/392,126,629.14
  6. Step 6: Final answer
    x = 412,060,827.59

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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.