Home / 1,385,857.35-2,078,982.86-426,392.44

Finding the Fourth Proportional to 1,385,857.35, 2,078,982.86 and 426,392.44

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Solution

The fourth proportional to 1,385,857.35, 2,078,982.86 and 426,392.44 is: 639,649.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,857.35 : 2,078,982.86 = 426,392.44 : x
  2. Step 2: Convert to fraction form
    1,385,857.35/2,078,982.86 = 426,392.44/x
  3. Step 3: Cross multiply
    1,385,857.35x = 2,078,982.86 × 426,392.44
  4. Step 4: Simplify right side
    1,385,857.35x = 886,462,567,064.16
  5. Step 5: Solve for x
    x = 886,462,567,064.16/1,385,857.35
  6. Step 6: Final answer
    x = 639,649.22

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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.