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Finding the Fourth Proportional to 661,374.56, 912,692.40 and 359,568.56

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Solution

The fourth proportional to 661,374.56, 912,692.40 and 359,568.56 is: 496,202.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,374.56 : 912,692.40 = 359,568.56 : x
  2. Step 2: Convert to fraction form
    661,374.56/912,692.40 = 359,568.56/x
  3. Step 3: Cross multiply
    661,374.56x = 912,692.40 × 359,568.56
  4. Step 4: Simplify right side
    661,374.56x = 328,175,491,990.94
  5. Step 5: Solve for x
    x = 328,175,491,990.94/661,374.56
  6. Step 6: Final answer
    x = 496,202.17

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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.