Home / 1,387,255.72-2,080,883.58-389,983.72

Finding the Fourth Proportional to 1,387,255.72, 2,080,883.58 and 389,983.72

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Solution

The fourth proportional to 1,387,255.72, 2,080,883.58 and 389,983.72 is: 584,975.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,255.72 : 2,080,883.58 = 389,983.72 : x
  2. Step 2: Convert to fraction form
    1,387,255.72/2,080,883.58 = 389,983.72/x
  3. Step 3: Cross multiply
    1,387,255.72x = 2,080,883.58 × 389,983.72
  4. Step 4: Simplify right side
    1,387,255.72x = 811,510,719,415.32
  5. Step 5: Solve for x
    x = 811,510,719,415.32/1,387,255.72
  6. Step 6: Final answer
    x = 584,975.58

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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.