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Finding the Fourth Proportional to 693,182.88, 956,497.74 and 387,221.43

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Solution

The fourth proportional to 693,182.88, 956,497.74 and 387,221.43 is: 534,312.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,182.88 : 956,497.74 = 387,221.43 : x
  2. Step 2: Convert to fraction form
    693,182.88/956,497.74 = 387,221.43/x
  3. Step 3: Cross multiply
    693,182.88x = 956,497.74 × 387,221.43
  4. Step 4: Simplify right side
    693,182.88x = 370,376,422,674.57
  5. Step 5: Solve for x
    x = 370,376,422,674.57/693,182.88
  6. Step 6: Final answer
    x = 534,312.71

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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.