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Finding the Fourth Proportional to 561,068.24, 774,275.05 and 319,350.82

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Solution

The fourth proportional to 561,068.24, 774,275.05 and 319,350.82 is: 440,704.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,068.24 : 774,275.05 = 319,350.82 : x
  2. Step 2: Convert to fraction form
    561,068.24/774,275.05 = 319,350.82/x
  3. Step 3: Cross multiply
    561,068.24x = 774,275.05 × 319,350.82
  4. Step 4: Simplify right side
    561,068.24x = 247,265,370,241.96
  5. Step 5: Solve for x
    x = 247,265,370,241.96/561,068.24
  6. Step 6: Final answer
    x = 440,704.63

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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.