Home / 840,738.76-1,261,072.82-391,305.04

Finding the Fourth Proportional to 840,738.76, 1,261,072.82 and 391,305.04

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Solution

The fourth proportional to 840,738.76, 1,261,072.82 and 391,305.04 is: 586,941.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,738.76 : 1,261,072.82 = 391,305.04 : x
  2. Step 2: Convert to fraction form
    840,738.76/1,261,072.82 = 391,305.04/x
  3. Step 3: Cross multiply
    840,738.76x = 1,261,072.82 × 391,305.04
  4. Step 4: Simplify right side
    840,738.76x = 493,464,150,273.01
  5. Step 5: Solve for x
    x = 493,464,150,273.01/840,738.76
  6. Step 6: Final answer
    x = 586,941.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.