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Finding the Fourth Proportional to 777,321.90, 1,163,349.18 and 477,992.04

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Solution

The fourth proportional to 777,321.90, 1,163,349.18 and 477,992.04 is: 715,368.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,321.90 : 1,163,349.18 = 477,992.04 : x
  2. Step 2: Convert to fraction form
    777,321.90/1,163,349.18 = 477,992.04/x
  3. Step 3: Cross multiply
    777,321.90x = 1,163,349.18 × 477,992.04
  4. Step 4: Simplify right side
    777,321.90x = 556,071,647,780.53
  5. Step 5: Solve for x
    x = 556,071,647,780.53/777,321.90
  6. Step 6: Final answer
    x = 715,368.56

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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.