Home / 664,517.32-917,002.02-378,010.60

Finding the Fourth Proportional to 664,517.32, 917,002.02 and 378,010.60

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Solution

The fourth proportional to 664,517.32, 917,002.02 and 378,010.60 is: 521,636.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,517.32 : 917,002.02 = 378,010.60 : x
  2. Step 2: Convert to fraction form
    664,517.32/917,002.02 = 378,010.60/x
  3. Step 3: Cross multiply
    664,517.32x = 917,002.02 × 378,010.60
  4. Step 4: Simplify right side
    664,517.32x = 346,636,483,781.41
  5. Step 5: Solve for x
    x = 346,636,483,781.41/664,517.32
  6. Step 6: Final answer
    x = 521,636.49

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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.