Home / 778,372.76-1,074,112.70-438,819.14

Finding the Fourth Proportional to 778,372.76, 1,074,112.70 and 438,819.14

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Solution

The fourth proportional to 778,372.76, 1,074,112.70 and 438,819.14 is: 605,546.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,372.76 : 1,074,112.70 = 438,819.14 : x
  2. Step 2: Convert to fraction form
    778,372.76/1,074,112.70 = 438,819.14/x
  3. Step 3: Cross multiply
    778,372.76x = 1,074,112.70 × 438,819.14
  4. Step 4: Simplify right side
    778,372.76x = 471,341,211,277.08
  5. Step 5: Solve for x
    x = 471,341,211,277.08/778,372.76
  6. Step 6: Final answer
    x = 605,546.90

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Half scale
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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.