Home / 790,648.55-1,091,081.70-428,069.48

Finding the Fourth Proportional to 790,648.55, 1,091,081.70 and 428,069.48

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Solution

The fourth proportional to 790,648.55, 1,091,081.70 and 428,069.48 is: 590,728.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,648.55 : 1,091,081.70 = 428,069.48 : x
  2. Step 2: Convert to fraction form
    790,648.55/1,091,081.70 = 428,069.48/x
  3. Step 3: Cross multiply
    790,648.55x = 1,091,081.70 × 428,069.48
  4. Step 4: Simplify right side
    790,648.55x = 467,058,775,956.52
  5. Step 5: Solve for x
    x = 467,058,775,956.52/790,648.55
  6. Step 6: Final answer
    x = 590,728.68

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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.