Home / 521,997,873.87-720,360,813.32-283,841,351.73

Finding the Fourth Proportional to 521,997,873.87, 720,360,813.32 and 283,841,351.73

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Solution

The fourth proportional to 521,997,873.87, 720,360,813.32 and 283,841,351.73 is: 391,703,103.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,997,873.87 : 720,360,813.32 = 283,841,351.73 : x
  2. Step 2: Convert to fraction form
    521,997,873.87/720,360,813.32 = 283,841,351.73/x
  3. Step 3: Cross multiply
    521,997,873.87x = 720,360,813.32 × 283,841,351.73
  4. Step 4: Simplify right side
    521,997,873.87x = 204,468,186,985,159,520
  5. Step 5: Solve for x
    x = 204,468,186,985,159,520/521,997,873.87
  6. Step 6: Final answer
    x = 391,703,103.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.