Home / 828,144,008.20-1,242,216,012.30-253,640,686.60

Finding the Fourth Proportional to 828,144,008.20, 1,242,216,012.30 and 253,640,686.60

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Solution

The fourth proportional to 828,144,008.20, 1,242,216,012.30 and 253,640,686.60 is: 380,461,029.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,144,008.20 : 1,242,216,012.30 = 253,640,686.60 : x
  2. Step 2: Convert to fraction form
    828,144,008.20/1,242,216,012.30 = 253,640,686.60/x
  3. Step 3: Cross multiply
    828,144,008.20x = 1,242,216,012.30 × 253,640,686.60
  4. Step 4: Simplify right side
    828,144,008.20x = 315,076,522,265,286,016
  5. Step 5: Solve for x
    x = 315,076,522,265,286,016/828,144,008.20
  6. Step 6: Final answer
    x = 380,461,029.90

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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.