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Finding the Fourth Proportional to 940,640.90, 1,409,406.15 and 800,672.90

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Solution

The fourth proportional to 940,640.90, 1,409,406.15 and 800,672.90 is: 1,199,685.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    940,640.90 : 1,409,406.15 = 800,672.90 : x
  2. Step 2: Convert to fraction form
    940,640.90/1,409,406.15 = 800,672.90/x
  3. Step 3: Cross multiply
    940,640.90x = 1,409,406.15 × 800,672.90
  4. Step 4: Simplify right side
    940,640.90x = 1,128,473,309,398.34
  5. Step 5: Solve for x
    x = 1,128,473,309,398.34/940,640.90
  6. Step 6: Final answer
    x = 1,199,685.56

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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.