Home / 828,144,010.20-1,242,216,015.30-253,640,688.60

Finding the Fourth Proportional to 828,144,010.20, 1,242,216,015.30 and 253,640,688.60

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Solution

The fourth proportional to 828,144,010.20, 1,242,216,015.30 and 253,640,688.60 is: 380,461,032.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,144,010.20 : 1,242,216,015.30 = 253,640,688.60 : x
  2. Step 2: Convert to fraction form
    828,144,010.20/1,242,216,015.30 = 253,640,688.60/x
  3. Step 3: Cross multiply
    828,144,010.20x = 1,242,216,015.30 × 253,640,688.60
  4. Step 4: Simplify right side
    828,144,010.20x = 315,076,525,510,640,128
  5. Step 5: Solve for x
    x = 315,076,525,510,640,128/828,144,010.20
  6. Step 6: Final answer
    x = 380,461,032.90

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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.