Home / 811,862.10-1,120,342.05-449,301.24

Finding the Fourth Proportional to 811,862.10, 1,120,342.05 and 449,301.24

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Solution

The fourth proportional to 811,862.10, 1,120,342.05 and 449,301.24 is: 620,020.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,862.10 : 1,120,342.05 = 449,301.24 : x
  2. Step 2: Convert to fraction form
    811,862.10/1,120,342.05 = 449,301.24/x
  3. Step 3: Cross multiply
    811,862.10x = 1,120,342.05 × 449,301.24
  4. Step 4: Simplify right side
    811,862.10x = 503,371,072,289.14
  5. Step 5: Solve for x
    x = 503,371,072,289.14/811,862.10
  6. Step 6: Final answer
    x = 620,020.41

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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.