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Finding the Fourth Proportional to 561,015.26, 774,096.84 and 319,283.46

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Solution

The fourth proportional to 561,015.26, 774,096.84 and 319,283.46 is: 440,551.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,015.26 : 774,096.84 = 319,283.46 : x
  2. Step 2: Convert to fraction form
    561,015.26/774,096.84 = 319,283.46/x
  3. Step 3: Cross multiply
    561,015.26x = 774,096.84 × 319,283.46
  4. Step 4: Simplify right side
    561,015.26x = 247,156,317,450.27
  5. Step 5: Solve for x
    x = 247,156,317,450.27/561,015.26
  6. Step 6: Final answer
    x = 440,551.86

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1.5x scale

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.