Home / 1,722,480.21-2,376,987.48-1,078,255.62

Finding the Fourth Proportional to 1,722,480.21, 2,376,987.48 and 1,078,255.62

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Solution

The fourth proportional to 1,722,480.21, 2,376,987.48 and 1,078,255.62 is: 1,487,970.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722,480.21 : 2,376,987.48 = 1,078,255.62 : x
  2. Step 2: Convert to fraction form
    1,722,480.21/2,376,987.48 = 1,078,255.62/x
  3. Step 3: Cross multiply
    1,722,480.21x = 2,376,987.48 × 1,078,255.62
  4. Step 4: Simplify right side
    1,722,480.21x = 2,563,000,108,979.64
  5. Step 5: Solve for x
    x = 2,563,000,108,979.64/1,722,480.21
  6. Step 6: Final answer
    x = 1,487,970.71

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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.