Home / 515,764,908.10-773,647,362.15-485,506,936.90

Finding the Fourth Proportional to 515,764,908.10, 773,647,362.15 and 485,506,936.90

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Solution

The fourth proportional to 515,764,908.10, 773,647,362.15 and 485,506,936.90 is: 728,260,405.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,764,908.10 : 773,647,362.15 = 485,506,936.90 : x
  2. Step 2: Convert to fraction form
    515,764,908.10/773,647,362.15 = 485,506,936.90/x
  3. Step 3: Cross multiply
    515,764,908.10x = 773,647,362.15 × 485,506,936.90
  4. Step 4: Simplify right side
    515,764,908.10x = 375,611,161,038,211,456
  5. Step 5: Solve for x
    x = 375,611,161,038,211,456/515,764,908.10
  6. Step 6: Final answer
    x = 728,260,405.35

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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.