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Finding the Fourth Proportional to 680,253.72, 938,758.77 and 374,365.32

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Solution

The fourth proportional to 680,253.72, 938,758.77 and 374,365.32 is: 516,628.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,253.72 : 938,758.77 = 374,365.32 : x
  2. Step 2: Convert to fraction form
    680,253.72/938,758.77 = 374,365.32/x
  3. Step 3: Cross multiply
    680,253.72x = 938,758.77 × 374,365.32
  4. Step 4: Simplify right side
    680,253.72x = 351,438,727,333.86
  5. Step 5: Solve for x
    x = 351,438,727,333.86/680,253.72
  6. Step 6: Final answer
    x = 516,628.89

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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.