Home / 738,379.70-1,107,569.55-419,515.10

Finding the Fourth Proportional to 738,379.70, 1,107,569.55 and 419,515.10

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Solution

The fourth proportional to 738,379.70, 1,107,569.55 and 419,515.10 is: 629,272.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,379.70 : 1,107,569.55 = 419,515.10 : x
  2. Step 2: Convert to fraction form
    738,379.70/1,107,569.55 = 419,515.10/x
  3. Step 3: Cross multiply
    738,379.70x = 1,107,569.55 × 419,515.10
  4. Step 4: Simplify right side
    738,379.70x = 464,642,150,525.21
  5. Step 5: Solve for x
    x = 464,642,150,525.21/738,379.70
  6. Step 6: Final answer
    x = 629,272.65

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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.