Home / 811,860.10-1,120,339.26-449,299.24

Finding the Fourth Proportional to 811,860.10, 1,120,339.26 and 449,299.24

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Solution

The fourth proportional to 811,860.10, 1,120,339.26 and 449,299.24 is: 620,017.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,860.10 : 1,120,339.26 = 449,299.24 : x
  2. Step 2: Convert to fraction form
    811,860.10/1,120,339.26 = 449,299.24/x
  3. Step 3: Cross multiply
    811,860.10x = 1,120,339.26 × 449,299.24
  4. Step 4: Simplify right side
    811,860.10x = 503,367,578,060.16
  5. Step 5: Solve for x
    x = 503,367,578,060.16/811,860.10
  6. Step 6: Final answer
    x = 620,017.63

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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.