Home / 678,844.76-936,775.46-407,062.62

Finding the Fourth Proportional to 678,844.76, 936,775.46 and 407,062.62

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Solution

The fourth proportional to 678,844.76, 936,775.46 and 407,062.62 is: 561,728.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,844.76 : 936,775.46 = 407,062.62 : x
  2. Step 2: Convert to fraction form
    678,844.76/936,775.46 = 407,062.62/x
  3. Step 3: Cross multiply
    678,844.76x = 936,775.46 × 407,062.62
  4. Step 4: Simplify right side
    678,844.76x = 381,326,273,099.31
  5. Step 5: Solve for x
    x = 381,326,273,099.31/678,844.76
  6. Step 6: Final answer
    x = 561,728.24

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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.