Home / 791,115.12-1,091,744.08-428,538.96

Finding the Fourth Proportional to 791,115.12, 1,091,744.08 and 428,538.96

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Solution

The fourth proportional to 791,115.12, 1,091,744.08 and 428,538.96 is: 591,386.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,115.12 : 1,091,744.08 = 428,538.96 : x
  2. Step 2: Convert to fraction form
    791,115.12/1,091,744.08 = 428,538.96/x
  3. Step 3: Cross multiply
    791,115.12x = 1,091,744.08 × 428,538.96
  4. Step 4: Simplify right side
    791,115.12x = 467,854,872,629.36
  5. Step 5: Solve for x
    x = 467,854,872,629.36/791,115.12
  6. Step 6: Final answer
    x = 591,386.59

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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.