Home / 909,119,629.39-1,363,530,144.89-391,410,691.15

Finding the Fourth Proportional to 909,119,629.39, 1,363,530,144.89 and 391,410,691.15

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Solution

The fourth proportional to 909,119,629.39, 1,363,530,144.89 and 391,410,691.15 is: 587,051,757.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,119,629.39 : 1,363,530,144.89 = 391,410,691.15 : x
  2. Step 2: Convert to fraction form
    909,119,629.39/1,363,530,144.89 = 391,410,691.15/x
  3. Step 3: Cross multiply
    909,119,629.39x = 1,363,530,144.89 × 391,410,691.15
  4. Step 4: Simplify right side
    909,119,629.39x = 533,700,276,413,297,472
  5. Step 5: Solve for x
    x = 533,700,276,413,297,472/909,119,629.39
  6. Step 6: Final answer
    x = 587,051,757.72

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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.