Home / 1,387,204.25-2,080,806.38-389,932.25

Finding the Fourth Proportional to 1,387,204.25, 2,080,806.38 and 389,932.25

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Solution

The fourth proportional to 1,387,204.25, 2,080,806.38 and 389,932.25 is: 584,898.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,204.25 : 2,080,806.38 = 389,932.25 : x
  2. Step 2: Convert to fraction form
    1,387,204.25/2,080,806.38 = 389,932.25/x
  3. Step 3: Cross multiply
    1,387,204.25x = 2,080,806.38 × 389,932.25
  4. Step 4: Simplify right side
    1,387,204.25x = 811,373,513,567.76
  5. Step 5: Solve for x
    x = 811,373,513,567.76/1,387,204.25
  6. Step 6: Final answer
    x = 584,898.38

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Double scale
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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.