Home / 801,285.18-1,105,729.74-438,638.90

Finding the Fourth Proportional to 801,285.18, 1,105,729.74 and 438,638.90

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Solution

The fourth proportional to 801,285.18, 1,105,729.74 and 438,638.90 is: 605,297.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,285.18 : 1,105,729.74 = 438,638.90 : x
  2. Step 2: Convert to fraction form
    801,285.18/1,105,729.74 = 438,638.90/x
  3. Step 3: Cross multiply
    801,285.18x = 1,105,729.74 × 438,638.90
  4. Step 4: Simplify right side
    801,285.18x = 485,016,076,850.89
  5. Step 5: Solve for x
    x = 485,016,076,850.89/801,285.18
  6. Step 6: Final answer
    x = 605,297.70

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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.