Home / 485,257,998.40-727,886,997.60-347,508,491.20

Finding the Fourth Proportional to 485,257,998.40, 727,886,997.60 and 347,508,491.20

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Solution

The fourth proportional to 485,257,998.40, 727,886,997.60 and 347,508,491.20 is: 521,262,736.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,257,998.40 : 727,886,997.60 = 347,508,491.20 : x
  2. Step 2: Convert to fraction form
    485,257,998.40/727,886,997.60 = 347,508,491.20/x
  3. Step 3: Cross multiply
    485,257,998.40x = 727,886,997.60 × 347,508,491.20
  4. Step 4: Simplify right side
    485,257,998.40x = 252,946,912,300,074,016
  5. Step 5: Solve for x
    x = 252,946,912,300,074,016/485,257,998.40
  6. Step 6: Final answer
    x = 521,262,736.80

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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.