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Finding the Fourth Proportional to 647,361.15, 970,162.95 and 343,678.58

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Solution

The fourth proportional to 647,361.15, 970,162.95 and 343,678.58 is: 515,051.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,361.15 : 970,162.95 = 343,678.58 : x
  2. Step 2: Convert to fraction form
    647,361.15/970,162.95 = 343,678.58/x
  3. Step 3: Cross multiply
    647,361.15x = 970,162.95 × 343,678.58
  4. Step 4: Simplify right side
    647,361.15x = 333,424,225,100.70
  5. Step 5: Solve for x
    x = 333,424,225,100.70/647,361.15
  6. Step 6: Final answer
    x = 515,051.34

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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.