Home / 804,919.80-1,207,379.70-213,943.80

Finding the Fourth Proportional to 804,919.80, 1,207,379.70 and 213,943.80

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Solution

The fourth proportional to 804,919.80, 1,207,379.70 and 213,943.80 is: 320,915.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,919.80 : 1,207,379.70 = 213,943.80 : x
  2. Step 2: Convert to fraction form
    804,919.80/1,207,379.70 = 213,943.80/x
  3. Step 3: Cross multiply
    804,919.80x = 1,207,379.70 × 213,943.80
  4. Step 4: Simplify right side
    804,919.80x = 258,311,401,060.86
  5. Step 5: Solve for x
    x = 258,311,401,060.86/804,919.80
  6. Step 6: Final answer
    x = 320,915.70

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Similar ratio
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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.