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Finding the Fourth Proportional to 777,648.72, 1,066,156.26 and 763,476.96

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Solution

The fourth proportional to 777,648.72, 1,066,156.26 and 763,476.96 is: 1,046,726.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,648.72 : 1,066,156.26 = 763,476.96 : x
  2. Step 2: Convert to fraction form
    777,648.72/1,066,156.26 = 763,476.96/x
  3. Step 3: Cross multiply
    777,648.72x = 1,066,156.26 × 763,476.96
  4. Step 4: Simplify right side
    777,648.72x = 813,985,740,269.77
  5. Step 5: Solve for x
    x = 813,985,740,269.77/777,648.72
  6. Step 6: Final answer
    x = 1,046,726.78

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.