Home / 515,098,159.40-772,647,239.10-310,520,930.60

Finding the Fourth Proportional to 515,098,159.40, 772,647,239.10 and 310,520,930.60

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Solution

The fourth proportional to 515,098,159.40, 772,647,239.10 and 310,520,930.60 is: 465,781,395.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,098,159.40 : 772,647,239.10 = 310,520,930.60 : x
  2. Step 2: Convert to fraction form
    515,098,159.40/772,647,239.10 = 310,520,930.60/x
  3. Step 3: Cross multiply
    515,098,159.40x = 772,647,239.10 × 310,520,930.60
  4. Step 4: Simplify right side
    515,098,159.40x = 239,923,139,710,852,736
  5. Step 5: Solve for x
    x = 239,923,139,710,852,736/515,098,159.40
  6. Step 6: Final answer
    x = 465,781,395.90

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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.