Home / 1,426,439.12-2,138,388.73-515,418.40

Finding the Fourth Proportional to 1,426,439.12, 2,138,388.73 and 515,418.40

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Solution

The fourth proportional to 1,426,439.12, 2,138,388.73 and 515,418.40 is: 772,668.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426,439.12 : 2,138,388.73 = 515,418.40 : x
  2. Step 2: Convert to fraction form
    1,426,439.12/2,138,388.73 = 515,418.40/x
  3. Step 3: Cross multiply
    1,426,439.12x = 2,138,388.73 × 515,418.40
  4. Step 4: Simplify right side
    1,426,439.12x = 1,102,164,897,794.63
  5. Step 5: Solve for x
    x = 1,102,164,897,794.63/1,426,439.12
  6. Step 6: Final answer
    x = 772,668.73

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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.