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Finding the Fourth Proportional to 557,692.91, 769,614.21 and 316,021.66

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Solution

The fourth proportional to 557,692.91, 769,614.21 and 316,021.66 is: 436,108.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,692.91 : 769,614.21 = 316,021.66 : x
  2. Step 2: Convert to fraction form
    557,692.91/769,614.21 = 316,021.66/x
  3. Step 3: Cross multiply
    557,692.91x = 769,614.21 × 316,021.66
  4. Step 4: Simplify right side
    557,692.91x = 243,214,760,444.29
  5. Step 5: Solve for x
    x = 243,214,760,444.29/557,692.91
  6. Step 6: Final answer
    x = 436,108.76

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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.