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Finding the Fourth Proportional to 680,270.09, 938,781.24 and 374,381.69

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Solution

The fourth proportional to 680,270.09, 938,781.24 and 374,381.69 is: 516,651.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,270.09 : 938,781.24 = 374,381.69 : x
  2. Step 2: Convert to fraction form
    680,270.09/938,781.24 = 374,381.69/x
  3. Step 3: Cross multiply
    680,270.09x = 938,781.24 × 374,381.69
  4. Step 4: Simplify right side
    680,270.09x = 351,462,502,477.59
  5. Step 5: Solve for x
    x = 351,462,502,477.59/680,270.09
  6. Step 6: Final answer
    x = 516,651.42

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1.5x scale

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.