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Finding the Fourth Proportional to 520,469.73, 779,812.70 and 349,371.15

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Solution

The fourth proportional to 520,469.73, 779,812.70 and 349,371.15 is: 523,458.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,469.73 : 779,812.70 = 349,371.15 : x
  2. Step 2: Convert to fraction form
    520,469.73/779,812.70 = 349,371.15/x
  3. Step 3: Cross multiply
    520,469.73x = 779,812.70 × 349,371.15
  4. Step 4: Simplify right side
    520,469.73x = 272,444,059,783.61
  5. Step 5: Solve for x
    x = 272,444,059,783.61/520,469.73
  6. Step 6: Final answer
    x = 523,458.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.