Home / 889,640.96-1,228,003.94-540,780.13

Finding the Fourth Proportional to 889,640.96, 1,228,003.94 and 540,780.13

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Solution

The fourth proportional to 889,640.96, 1,228,003.94 and 540,780.13 is: 746,458.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,640.96 : 1,228,003.94 = 540,780.13 : x
  2. Step 2: Convert to fraction form
    889,640.96/1,228,003.94 = 540,780.13/x
  3. Step 3: Cross multiply
    889,640.96x = 1,228,003.94 × 540,780.13
  4. Step 4: Simplify right side
    889,640.96x = 664,080,133,200.67
  5. Step 5: Solve for x
    x = 664,080,133,200.67/889,640.96
  6. Step 6: Final answer
    x = 746,458.59

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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.