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Finding the Fourth Proportional to 591,376.84, 816,100.34 and 319,444.72

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Solution

The fourth proportional to 591,376.84, 816,100.34 and 319,444.72 is: 440,833.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,376.84 : 816,100.34 = 319,444.72 : x
  2. Step 2: Convert to fraction form
    591,376.84/816,100.34 = 319,444.72/x
  3. Step 3: Cross multiply
    591,376.84x = 816,100.34 × 319,444.72
  4. Step 4: Simplify right side
    591,376.84x = 260,698,940,965.73
  5. Step 5: Solve for x
    x = 260,698,940,965.73/591,376.84
  6. Step 6: Final answer
    x = 440,833.87

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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.