Home / 872,205.80-1,204,120.50-528,100.52

Finding the Fourth Proportional to 872,205.80, 1,204,120.50 and 528,100.52

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Solution

The fourth proportional to 872,205.80, 1,204,120.50 and 528,100.52 is: 729,067.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,205.80 : 1,204,120.50 = 528,100.52 : x
  2. Step 2: Convert to fraction form
    872,205.80/1,204,120.50 = 528,100.52/x
  3. Step 3: Cross multiply
    872,205.80x = 1,204,120.50 × 528,100.52
  4. Step 4: Simplify right side
    872,205.80x = 635,896,662,192.66
  5. Step 5: Solve for x
    x = 635,896,662,192.66/872,205.80
  6. Step 6: Final answer
    x = 729,067.22

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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.