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Finding the Fourth Proportional to 701,018.78, 967,406.37 and 378,728.69

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Solution

The fourth proportional to 701,018.78, 967,406.37 and 378,728.69 is: 522,645.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    701,018.78 : 967,406.37 = 378,728.69 : x
  2. Step 2: Convert to fraction form
    701,018.78/967,406.37 = 378,728.69/x
  3. Step 3: Cross multiply
    701,018.78x = 967,406.37 × 378,728.69
  4. Step 4: Simplify right side
    701,018.78x = 366,384,547,207.76
  5. Step 5: Solve for x
    x = 366,384,547,207.76/701,018.78
  6. Step 6: Final answer
    x = 522,645.84

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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.