Home / 811,825.63-1,120,243.16-485,073.52

Finding the Fourth Proportional to 811,825.63, 1,120,243.16 and 485,073.52

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Solution

The fourth proportional to 811,825.63, 1,120,243.16 and 485,073.52 is: 669,355.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,825.63 : 1,120,243.16 = 485,073.52 : x
  2. Step 2: Convert to fraction form
    811,825.63/1,120,243.16 = 485,073.52/x
  3. Step 3: Cross multiply
    811,825.63x = 1,120,243.16 × 485,073.52
  4. Step 4: Simplify right side
    811,825.63x = 543,400,291,289.20
  5. Step 5: Solve for x
    x = 543,400,291,289.20/811,825.63
  6. Step 6: Final answer
    x = 669,355.92

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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.