Home / 790,932.24-1,091,489.76-428,360.40

Finding the Fourth Proportional to 790,932.24, 1,091,489.76 and 428,360.40

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Solution

The fourth proportional to 790,932.24, 1,091,489.76 and 428,360.40 is: 591,139.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,932.24 : 1,091,489.76 = 428,360.40 : x
  2. Step 2: Convert to fraction form
    790,932.24/1,091,489.76 = 428,360.40/x
  3. Step 3: Cross multiply
    790,932.24x = 1,091,489.76 × 428,360.40
  4. Step 4: Simplify right side
    790,932.24x = 467,550,990,189.50
  5. Step 5: Solve for x
    x = 467,550,990,189.50/790,932.24
  6. Step 6: Final answer
    x = 591,139.12

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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.