Home / 728,700.55-1,092,733.37-387,069.21

Finding the Fourth Proportional to 728,700.55, 1,092,733.37 and 387,069.21

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Solution

The fourth proportional to 728,700.55, 1,092,733.37 and 387,069.21 is: 580,435.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,700.55 : 1,092,733.37 = 387,069.21 : x
  2. Step 2: Convert to fraction form
    728,700.55/1,092,733.37 = 387,069.21/x
  3. Step 3: Cross multiply
    728,700.55x = 1,092,733.37 × 387,069.21
  4. Step 4: Simplify right side
    728,700.55x = 422,963,442,266.54
  5. Step 5: Solve for x
    x = 422,963,442,266.54/728,700.55
  6. Step 6: Final answer
    x = 580,435.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.