Home / 1,387,201.25-2,080,801.88-389,929.25

Finding the Fourth Proportional to 1,387,201.25, 2,080,801.88 and 389,929.25

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Solution

The fourth proportional to 1,387,201.25, 2,080,801.88 and 389,929.25 is: 584,893.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,201.25 : 2,080,801.88 = 389,929.25 : x
  2. Step 2: Convert to fraction form
    1,387,201.25/2,080,801.88 = 389,929.25/x
  3. Step 3: Cross multiply
    1,387,201.25x = 2,080,801.88 × 389,929.25
  4. Step 4: Simplify right side
    1,387,201.25x = 811,365,516,466.99
  5. Step 5: Solve for x
    x = 811,365,516,466.99/1,387,201.25
  6. Step 6: Final answer
    x = 584,893.88

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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.