Home / 811,255.80-1,214,550.90-496,327.80

Finding the Fourth Proportional to 811,255.80, 1,214,550.90 and 496,327.80

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Solution

The fourth proportional to 811,255.80, 1,214,550.90 and 496,327.80 is: 743,064.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,255.80 : 1,214,550.90 = 496,327.80 : x
  2. Step 2: Convert to fraction form
    811,255.80/1,214,550.90 = 496,327.80/x
  3. Step 3: Cross multiply
    811,255.80x = 1,214,550.90 × 496,327.80
  4. Step 4: Simplify right side
    811,255.80x = 602,815,376,185.02
  5. Step 5: Solve for x
    x = 602,815,376,185.02/811,255.80
  6. Step 6: Final answer
    x = 743,064.49

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Double scale
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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.