Home / 638,829.77-958,670.75-331,365.11

Finding the Fourth Proportional to 638,829.77, 958,670.75 and 331,365.11

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Solution

The fourth proportional to 638,829.77, 958,670.75 and 331,365.11 is: 497,268.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,829.77 : 958,670.75 = 331,365.11 : x
  2. Step 2: Convert to fraction form
    638,829.77/958,670.75 = 331,365.11/x
  3. Step 3: Cross multiply
    638,829.77x = 958,670.75 × 331,365.11
  4. Step 4: Simplify right side
    638,829.77x = 317,670,034,562.59
  5. Step 5: Solve for x
    x = 317,670,034,562.59/638,829.77
  6. Step 6: Final answer
    x = 497,268.68

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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.