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Finding the Fourth Proportional to 633,240.68, 874,025.94 and 391,377.62

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Solution

The fourth proportional to 633,240.68, 874,025.94 and 391,377.62 is: 540,196.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,240.68 : 874,025.94 = 391,377.62 : x
  2. Step 2: Convert to fraction form
    633,240.68/874,025.94 = 391,377.62/x
  3. Step 3: Cross multiply
    633,240.68x = 874,025.94 × 391,377.62
  4. Step 4: Simplify right side
    633,240.68x = 342,074,187,845.33
  5. Step 5: Solve for x
    x = 342,074,187,845.33/633,240.68
  6. Step 6: Final answer
    x = 540,196.17

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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.