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Finding the Fourth Proportional to 647,446.70, 970,878.45 and 247,954.70

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Solution

The fourth proportional to 647,446.70, 970,878.45 and 247,954.70 is: 371,820.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,446.70 : 970,878.45 = 247,954.70 : x
  2. Step 2: Convert to fraction form
    647,446.70/970,878.45 = 247,954.70/x
  3. Step 3: Cross multiply
    647,446.70x = 970,878.45 × 247,954.70
  4. Step 4: Simplify right side
    647,446.70x = 240,733,874,806.22
  5. Step 5: Solve for x
    x = 240,733,874,806.22/647,446.70
  6. Step 6: Final answer
    x = 371,820.38

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1.5x scale

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.