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Finding the Fourth Proportional to 707,502.86, 976,247.78 and 397,393.55

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Solution

The fourth proportional to 707,502.86, 976,247.78 and 397,393.55 is: 548,343.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,502.86 : 976,247.78 = 397,393.55 : x
  2. Step 2: Convert to fraction form
    707,502.86/976,247.78 = 397,393.55/x
  3. Step 3: Cross multiply
    707,502.86x = 976,247.78 × 397,393.55
  4. Step 4: Simplify right side
    707,502.86x = 387,954,564,105.61
  5. Step 5: Solve for x
    x = 387,954,564,105.61/707,502.86
  6. Step 6: Final answer
    x = 548,343.46

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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.