Home / 821,725.95-1,232,721.37-253,106.78

Finding the Fourth Proportional to 821,725.95, 1,232,721.37 and 253,106.78

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Solution

The fourth proportional to 821,725.95, 1,232,721.37 and 253,106.78 is: 379,700.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,725.95 : 1,232,721.37 = 253,106.78 : x
  2. Step 2: Convert to fraction form
    821,725.95/1,232,721.37 = 253,106.78/x
  3. Step 3: Cross multiply
    821,725.95x = 1,232,721.37 × 253,106.78
  4. Step 4: Simplify right side
    821,725.95x = 312,010,139,370.60
  5. Step 5: Solve for x
    x = 312,010,139,370.60/821,725.95
  6. Step 6: Final answer
    x = 379,700.97

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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.