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Finding the Fourth Proportional to 627,981.96, 866,637.84 and 359,761.80

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Solution

The fourth proportional to 627,981.96, 866,637.84 and 359,761.80 is: 496,484.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,981.96 : 866,637.84 = 359,761.80 : x
  2. Step 2: Convert to fraction form
    627,981.96/866,637.84 = 359,761.80/x
  3. Step 3: Cross multiply
    627,981.96x = 866,637.84 × 359,761.80
  4. Step 4: Simplify right side
    627,981.96x = 311,783,189,266.51
  5. Step 5: Solve for x
    x = 311,783,189,266.51/627,981.96
  6. Step 6: Final answer
    x = 496,484.31

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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.