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Finding the Fourth Proportional to 678,608.30, 936,843.02 and 523,220.19

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Solution

The fourth proportional to 678,608.30, 936,843.02 and 523,220.19 is: 722,324.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,608.30 : 936,843.02 = 523,220.19 : x
  2. Step 2: Convert to fraction form
    678,608.30/936,843.02 = 523,220.19/x
  3. Step 3: Cross multiply
    678,608.30x = 936,843.02 × 523,220.19
  4. Step 4: Simplify right side
    678,608.30x = 490,175,180,308.47
  5. Step 5: Solve for x
    x = 490,175,180,308.47/678,608.30
  6. Step 6: Final answer
    x = 722,324.18

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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.