Home / 778,370.76-1,074,109.95-438,817.14

Finding the Fourth Proportional to 778,370.76, 1,074,109.95 and 438,817.14

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Solution

The fourth proportional to 778,370.76, 1,074,109.95 and 438,817.14 is: 605,544.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,370.76 : 1,074,109.95 = 438,817.14 : x
  2. Step 2: Convert to fraction form
    778,370.76/1,074,109.95 = 438,817.14/x
  3. Step 3: Cross multiply
    778,370.76x = 1,074,109.95 × 438,817.14
  4. Step 4: Simplify right side
    778,370.76x = 471,337,856,304.54
  5. Step 5: Solve for x
    x = 471,337,856,304.54/778,370.76
  6. Step 6: Final answer
    x = 605,544.14

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Double scale
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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.