Home / 515,032,015.40-772,548,023.10-310,454,786.60

Finding the Fourth Proportional to 515,032,015.40, 772,548,023.10 and 310,454,786.60

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Solution

The fourth proportional to 515,032,015.40, 772,548,023.10 and 310,454,786.60 is: 465,682,179.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,032,015.40 : 772,548,023.10 = 310,454,786.60 : x
  2. Step 2: Convert to fraction form
    515,032,015.40/772,548,023.10 = 310,454,786.60/x
  3. Step 3: Cross multiply
    515,032,015.40x = 772,548,023.10 × 310,454,786.60
  4. Step 4: Simplify right side
    515,032,015.40x = 239,841,231,649,762,400
  5. Step 5: Solve for x
    x = 239,841,231,649,762,400/515,032,015.40
  6. Step 6: Final answer
    x = 465,682,179.90

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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.