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Finding the Fourth Proportional to 523,651.92, 722,721.74 and 308,815.62

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Solution

The fourth proportional to 523,651.92, 722,721.74 and 308,815.62 is: 426,213.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,651.92 : 722,721.74 = 308,815.62 : x
  2. Step 2: Convert to fraction form
    523,651.92/722,721.74 = 308,815.62/x
  3. Step 3: Cross multiply
    523,651.92x = 722,721.74 × 308,815.62
  4. Step 4: Simplify right side
    523,651.92x = 223,187,760,681.50
  5. Step 5: Solve for x
    x = 223,187,760,681.50/523,651.92
  6. Step 6: Final answer
    x = 426,213.96

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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.