Home / 485,515,215.90-728,272,823.85-445,338,276.30

Finding the Fourth Proportional to 485,515,215.90, 728,272,823.85 and 445,338,276.30

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Solution

The fourth proportional to 485,515,215.90, 728,272,823.85 and 445,338,276.30 is: 668,007,414.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,515,215.90 : 728,272,823.85 = 445,338,276.30 : x
  2. Step 2: Convert to fraction form
    485,515,215.90/728,272,823.85 = 445,338,276.30/x
  3. Step 3: Cross multiply
    485,515,215.90x = 728,272,823.85 × 445,338,276.30
  4. Step 4: Simplify right side
    485,515,215.90x = 324,327,764,049,492,544
  5. Step 5: Solve for x
    x = 324,327,764,049,492,544/485,515,215.90
  6. Step 6: Final answer
    x = 668,007,414.45

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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.