Home / 678,475.32-936,310.86-384,100.44

Finding the Fourth Proportional to 678,475.32, 936,310.86 and 384,100.44

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Solution

The fourth proportional to 678,475.32, 936,310.86 and 384,100.44 is: 530,067.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,475.32 : 936,310.86 = 384,100.44 : x
  2. Step 2: Convert to fraction form
    678,475.32/936,310.86 = 384,100.44/x
  3. Step 3: Cross multiply
    678,475.32x = 936,310.86 × 384,100.44
  4. Step 4: Simplify right side
    678,475.32x = 359,637,413,302.78
  5. Step 5: Solve for x
    x = 359,637,413,302.78/678,475.32
  6. Step 6: Final answer
    x = 530,067.05

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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.