Home / 778,349.30-1,074,120.26-438,815.12

Finding the Fourth Proportional to 778,349.30, 1,074,120.26 and 438,815.12

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Solution

The fourth proportional to 778,349.30, 1,074,120.26 and 438,815.12 is: 605,563.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,349.30 : 1,074,120.26 = 438,815.12 : x
  2. Step 2: Convert to fraction form
    778,349.30/1,074,120.26 = 438,815.12/x
  3. Step 3: Cross multiply
    778,349.30x = 1,074,120.26 × 438,815.12
  4. Step 4: Simplify right side
    778,349.30x = 471,340,203,221.65
  5. Step 5: Solve for x
    x = 471,340,203,221.65/778,349.30
  6. Step 6: Final answer
    x = 605,563.86

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.