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Finding the Fourth Proportional to 647,732.70, 970,286.85 and 366,921.90

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Solution

The fourth proportional to 647,732.70, 970,286.85 and 366,921.90 is: 549,639.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,732.70 : 970,286.85 = 366,921.90 : x
  2. Step 2: Convert to fraction form
    647,732.70/970,286.85 = 366,921.90/x
  3. Step 3: Cross multiply
    647,732.70x = 970,286.85 × 366,921.90
  4. Step 4: Simplify right side
    647,732.70x = 356,019,494,547.02
  5. Step 5: Solve for x
    x = 356,019,494,547.02/647,732.70
  6. Step 6: Final answer
    x = 549,639.53

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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.