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Finding the Fourth Proportional to 680,027.15, 938,400.39 and 374,054.15

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Solution

The fourth proportional to 680,027.15, 938,400.39 and 374,054.15 is: 516,174.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,027.15 : 938,400.39 = 374,054.15 : x
  2. Step 2: Convert to fraction form
    680,027.15/938,400.39 = 374,054.15/x
  3. Step 3: Cross multiply
    680,027.15x = 938,400.39 × 374,054.15
  4. Step 4: Simplify right side
    680,027.15x = 351,012,562,587.12
  5. Step 5: Solve for x
    x = 351,012,562,587.12/680,027.15
  6. Step 6: Final answer
    x = 516,174.33

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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.