Home / 812,760.48-1,121,621.04-468,589.59

Finding the Fourth Proportional to 812,760.48, 1,121,621.04 and 468,589.59

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Solution

The fourth proportional to 812,760.48, 1,121,621.04 and 468,589.59 is: 646,660.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,760.48 : 1,121,621.04 = 468,589.59 : x
  2. Step 2: Convert to fraction form
    812,760.48/1,121,621.04 = 468,589.59/x
  3. Step 3: Cross multiply
    812,760.48x = 1,121,621.04 × 468,589.59
  4. Step 4: Simplify right side
    812,760.48x = 525,579,943,268.97
  5. Step 5: Solve for x
    x = 525,579,943,268.97/812,760.48
  6. Step 6: Final answer
    x = 646,660.31

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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.