Home / 890,919.80-1,336,379.70-838,431.80

Finding the Fourth Proportional to 890,919.80, 1,336,379.70 and 838,431.80

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Solution

The fourth proportional to 890,919.80, 1,336,379.70 and 838,431.80 is: 1,257,647.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,919.80 : 1,336,379.70 = 838,431.80 : x
  2. Step 2: Convert to fraction form
    890,919.80/1,336,379.70 = 838,431.80/x
  3. Step 3: Cross multiply
    890,919.80x = 1,336,379.70 × 838,431.80
  4. Step 4: Simplify right side
    890,919.80x = 1,120,463,237,354.46
  5. Step 5: Solve for x
    x = 1,120,463,237,354.46/890,919.80
  6. Step 6: Final answer
    x = 1,257,647.70

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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.