Home / 828,174,986.40-1,240,750,825.20-673,986,237.60

Finding the Fourth Proportional to 828,174,986.40, 1,240,750,825.20 and 673,986,237.60

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Solution

The fourth proportional to 828,174,986.40, 1,240,750,825.20 and 673,986,237.60 is: 1,009,749,140.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,174,986.40 : 1,240,750,825.20 = 673,986,237.60 : x
  2. Step 2: Convert to fraction form
    828,174,986.40/1,240,750,825.20 = 673,986,237.60/x
  3. Step 3: Cross multiply
    828,174,986.40x = 1,240,750,825.20 × 673,986,237.60
  4. Step 4: Simplify right side
    828,174,986.40x = 836,248,980,475,643,392
  5. Step 5: Solve for x
    x = 836,248,980,475,643,392/828,174,986.40
  6. Step 6: Final answer
    x = 1,009,749,140.23

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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.