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Finding the Fourth Proportional to 647,458.70, 970,896.45 and 247,966.70

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Solution

The fourth proportional to 647,458.70, 970,896.45 and 247,966.70 is: 371,838.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,458.70 : 970,896.45 = 247,966.70 : x
  2. Step 2: Convert to fraction form
    647,458.70/970,896.45 = 247,966.70/x
  3. Step 3: Cross multiply
    647,458.70x = 970,896.45 × 247,966.70
  4. Step 4: Simplify right side
    647,458.70x = 240,749,988,748.22
  5. Step 5: Solve for x
    x = 240,749,988,748.22/647,458.70
  6. Step 6: Final answer
    x = 371,838.37

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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.