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Finding the Fourth Proportional to 646,728.20, 970,529.70 and 362,418.20

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Solution

The fourth proportional to 646,728.20, 970,529.70 and 362,418.20 is: 543,872.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,728.20 : 970,529.70 = 362,418.20 : x
  2. Step 2: Convert to fraction form
    646,728.20/970,529.70 = 362,418.20/x
  3. Step 3: Cross multiply
    646,728.20x = 970,529.70 × 362,418.20
  4. Step 4: Simplify right side
    646,728.20x = 351,737,626,920.54
  5. Step 5: Solve for x
    x = 351,737,626,920.54/646,728.20
  6. Step 6: Final answer
    x = 543,872.41

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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.