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Finding the Fourth Proportional to 1,372,330, 1,891,450.92 and 912,622.80

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Solution

The fourth proportional to 1,372,330, 1,891,450.92 and 912,622.80 is: 1,257,847.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372,330 : 1,891,450.92 = 912,622.80 : x
  2. Step 2: Convert to fraction form
    1,372,330/1,891,450.92 = 912,622.80/x
  3. Step 3: Cross multiply
    1,372,330x = 1,891,450.92 × 912,622.80
  4. Step 4: Simplify right side
    1,372,330x = 1,726,181,234,672.98
  5. Step 5: Solve for x
    x = 1,726,181,234,672.98/1,372,330
  6. Step 6: Final answer
    x = 1,257,847.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.