Home / 790,643.12-1,091,074.27-428,064.04

Finding the Fourth Proportional to 790,643.12, 1,091,074.27 and 428,064.04

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Solution

The fourth proportional to 790,643.12, 1,091,074.27 and 428,064.04 is: 590,721.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,643.12 : 1,091,074.27 = 428,064.04 : x
  2. Step 2: Convert to fraction form
    790,643.12/1,091,074.27 = 428,064.04/x
  3. Step 3: Cross multiply
    790,643.12x = 1,091,074.27 × 428,064.04
  4. Step 4: Simplify right side
    790,643.12x = 467,049,659,956.25
  5. Step 5: Solve for x
    x = 467,049,659,956.25/790,643.12
  6. Step 6: Final answer
    x = 590,721.21

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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.