Home / 1,386,940.20-2,080,410.30-389,668.20

Finding the Fourth Proportional to 1,386,940.20, 2,080,410.30 and 389,668.20

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Solution

The fourth proportional to 1,386,940.20, 2,080,410.30 and 389,668.20 is: 584,502.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,940.20 : 2,080,410.30 = 389,668.20 : x
  2. Step 2: Convert to fraction form
    1,386,940.20/2,080,410.30 = 389,668.20/x
  3. Step 3: Cross multiply
    1,386,940.20x = 2,080,410.30 × 389,668.20
  4. Step 4: Simplify right side
    1,386,940.20x = 810,669,736,862.46
  5. Step 5: Solve for x
    x = 810,669,736,862.46/1,386,940.20
  6. Step 6: Final answer
    x = 584,502.30

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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.