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Finding the Fourth Proportional to 550,239.72, 758,981.34 and 397,502.38

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Solution

The fourth proportional to 550,239.72, 758,981.34 and 397,502.38 is: 548,300.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,239.72 : 758,981.34 = 397,502.38 : x
  2. Step 2: Convert to fraction form
    550,239.72/758,981.34 = 397,502.38/x
  3. Step 3: Cross multiply
    550,239.72x = 758,981.34 × 397,502.38
  4. Step 4: Simplify right side
    550,239.72x = 301,696,889,025.59
  5. Step 5: Solve for x
    x = 301,696,889,025.59/550,239.72
  6. Step 6: Final answer
    x = 548,300.82

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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.