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Finding the Fourth Proportional to 647,426.70, 970,848.45 and 247,934.70

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Solution

The fourth proportional to 647,426.70, 970,848.45 and 247,934.70 is: 371,790.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,426.70 : 970,848.45 = 247,934.70 : x
  2. Step 2: Convert to fraction form
    647,426.70/970,848.45 = 247,934.70/x
  3. Step 3: Cross multiply
    647,426.70x = 970,848.45 × 247,934.70
  4. Step 4: Simplify right side
    647,426.70x = 240,707,019,196.22
  5. Step 5: Solve for x
    x = 240,707,019,196.22/647,426.70
  6. Step 6: Final answer
    x = 371,790.38

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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.