Home / 790,990.06-1,091,560.79-428,405.66

Finding the Fourth Proportional to 790,990.06, 1,091,560.79 and 428,405.66

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Solution

The fourth proportional to 790,990.06, 1,091,560.79 and 428,405.66 is: 591,196.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,990.06 : 1,091,560.79 = 428,405.66 : x
  2. Step 2: Convert to fraction form
    790,990.06/1,091,560.79 = 428,405.66/x
  3. Step 3: Cross multiply
    790,990.06x = 1,091,560.79 × 428,405.66
  4. Step 4: Simplify right side
    790,990.06x = 467,630,820,670.07
  5. Step 5: Solve for x
    x = 467,630,820,670.07/790,990.06
  6. Step 6: Final answer
    x = 591,196.84

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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.