Home / 789,319.80-1,183,979.70-346,087.80

Finding the Fourth Proportional to 789,319.80, 1,183,979.70 and 346,087.80

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Solution

The fourth proportional to 789,319.80, 1,183,979.70 and 346,087.80 is: 519,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,319.80 : 1,183,979.70 = 346,087.80 : x
  2. Step 2: Convert to fraction form
    789,319.80/1,183,979.70 = 346,087.80/x
  3. Step 3: Cross multiply
    789,319.80x = 1,183,979.70 × 346,087.80
  4. Step 4: Simplify right side
    789,319.80x = 409,760,929,617.66
  5. Step 5: Solve for x
    x = 409,760,929,617.66/789,319.80
  6. Step 6: Final answer
    x = 519,131.70

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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.