Home / 918,998.88-1,268,144.88-511,101.48

Finding the Fourth Proportional to 918,998.88, 1,268,144.88 and 511,101.48

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Solution

The fourth proportional to 918,998.88, 1,268,144.88 and 511,101.48 is: 705,279.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,998.88 : 1,268,144.88 = 511,101.48 : x
  2. Step 2: Convert to fraction form
    918,998.88/1,268,144.88 = 511,101.48/x
  3. Step 3: Cross multiply
    918,998.88x = 1,268,144.88 × 511,101.48
  4. Step 4: Simplify right side
    918,998.88x = 648,150,725,022.42
  5. Step 5: Solve for x
    x = 648,150,725,022.42/918,998.88
  6. Step 6: Final answer
    x = 705,279.12

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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.