Home / 811,876.16-1,120,361.40-449,315.24

Finding the Fourth Proportional to 811,876.16, 1,120,361.40 and 449,315.24

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Solution

The fourth proportional to 811,876.16, 1,120,361.40 and 449,315.24 is: 620,039.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,876.16 : 1,120,361.40 = 449,315.24 : x
  2. Step 2: Convert to fraction form
    811,876.16/1,120,361.40 = 449,315.24/x
  3. Step 3: Cross multiply
    811,876.16x = 1,120,361.40 × 449,315.24
  4. Step 4: Simplify right side
    811,876.16x = 503,395,451,327.74
  5. Step 5: Solve for x
    x = 503,395,451,327.74/811,876.16
  6. Step 6: Final answer
    x = 620,039.70

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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.