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Finding the Fourth Proportional to 680,727.69, 939,426.60 and 374,826.54

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Solution

The fourth proportional to 680,727.69, 939,426.60 and 374,826.54 is: 517,272.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,727.69 : 939,426.60 = 374,826.54 : x
  2. Step 2: Convert to fraction form
    680,727.69/939,426.60 = 374,826.54/x
  3. Step 3: Cross multiply
    680,727.69x = 939,426.60 × 374,826.54
  4. Step 4: Simplify right side
    680,727.69x = 352,122,022,061.96
  5. Step 5: Solve for x
    x = 352,122,022,061.96/680,727.69
  6. Step 6: Final answer
    x = 517,272.95

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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.