Home / 485,151,405.60-727,821,586.80-140,116,288.80

Finding the Fourth Proportional to 485,151,405.60, 727,821,586.80 and 140,116,288.80

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Solution

The fourth proportional to 485,151,405.60, 727,821,586.80 and 140,116,288.80 is: 210,201,719.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,151,405.60 : 727,821,586.80 = 140,116,288.80 : x
  2. Step 2: Convert to fraction form
    485,151,405.60/727,821,586.80 = 140,116,288.80/x
  3. Step 3: Cross multiply
    485,151,405.60x = 727,821,586.80 × 140,116,288.80
  4. Step 4: Simplify right side
    485,151,405.60x = 101,979,659,650,943,072
  5. Step 5: Solve for x
    x = 101,979,659,650,943,072/485,151,405.60
  6. Step 6: Final answer
    x = 210,201,719.45

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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.