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Finding the Fourth Proportional to 1,786,845.76, 2,680,768.91 and 722,635.16

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Solution

The fourth proportional to 1,786,845.76, 2,680,768.91 and 722,635.16 is: 1,084,155.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786,845.76 : 2,680,768.91 = 722,635.16 : x
  2. Step 2: Convert to fraction form
    1,786,845.76/2,680,768.91 = 722,635.16/x
  3. Step 3: Cross multiply
    1,786,845.76x = 2,680,768.91 × 722,635.16
  4. Step 4: Simplify right side
    1,786,845.76x = 1,937,217,858,603.62
  5. Step 5: Solve for x
    x = 1,937,217,858,603.62/1,786,845.76
  6. Step 6: Final answer
    x = 1,084,155.05

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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.