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Finding the Fourth Proportional to 777,329.88, 1,163,361.16 and 478,000.04

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Solution

The fourth proportional to 777,329.88, 1,163,361.16 and 478,000.04 is: 715,380.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,329.88 : 1,163,361.16 = 478,000.04 : x
  2. Step 2: Convert to fraction form
    777,329.88/1,163,361.16 = 478,000.04/x
  3. Step 3: Cross multiply
    777,329.88x = 1,163,361.16 × 478,000.04
  4. Step 4: Simplify right side
    777,329.88x = 556,086,681,014.45
  5. Step 5: Solve for x
    x = 556,086,681,014.45/777,329.88
  6. Step 6: Final answer
    x = 715,380.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.