Home / 485,063,468.78-727,601,037.80-135,288,238.76

Finding the Fourth Proportional to 485,063,468.78, 727,601,037.80 and 135,288,238.76

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Solution

The fourth proportional to 485,063,468.78, 727,601,037.80 and 135,288,238.76 is: 202,933,985.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,063,468.78 : 727,601,037.80 = 135,288,238.76 : x
  2. Step 2: Convert to fraction form
    485,063,468.78/727,601,037.80 = 135,288,238.76/x
  3. Step 3: Cross multiply
    485,063,468.78x = 727,601,037.80 × 135,288,238.76
  4. Step 4: Simplify right side
    485,063,468.78x = 98,435,862,922,324,224
  5. Step 5: Solve for x
    x = 98,435,862,922,324,224/485,063,468.78
  6. Step 6: Final answer
    x = 202,933,985.47

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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.