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Finding the Fourth Proportional to 647,362.15, 970,164.45 and 343,679.58

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Solution

The fourth proportional to 647,362.15, 970,164.45 and 343,679.58 is: 515,052.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,362.15 : 970,164.45 = 343,679.58 : x
  2. Step 2: Convert to fraction form
    647,362.15/970,164.45 = 343,679.58/x
  3. Step 3: Cross multiply
    647,362.15x = 970,164.45 × 343,679.58
  4. Step 4: Simplify right side
    647,362.15x = 333,425,710,706.93
  5. Step 5: Solve for x
    x = 333,425,710,706.93/647,362.15
  6. Step 6: Final answer
    x = 515,052.84

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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.