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Finding the Fourth Proportional to 559,757.39, 771,854.67 and 378,153.97

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Solution

The fourth proportional to 559,757.39, 771,854.67 and 378,153.97 is: 521,440.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,757.39 : 771,854.67 = 378,153.97 : x
  2. Step 2: Convert to fraction form
    559,757.39/771,854.67 = 378,153.97/x
  3. Step 3: Cross multiply
    559,757.39x = 771,854.67 × 378,153.97
  4. Step 4: Simplify right side
    559,757.39x = 291,879,905,793.90
  5. Step 5: Solve for x
    x = 291,879,905,793.90/559,757.39
  6. Step 6: Final answer
    x = 521,440.03

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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.