Home / 1,500,819.48-2,071,121.36-812,486.31

Finding the Fourth Proportional to 1,500,819.48, 2,071,121.36 and 812,486.31

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Solution

The fourth proportional to 1,500,819.48, 2,071,121.36 and 812,486.31 is: 1,121,225.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,500,819.48 : 2,071,121.36 = 812,486.31 : x
  2. Step 2: Convert to fraction form
    1,500,819.48/2,071,121.36 = 812,486.31/x
  3. Step 3: Cross multiply
    1,500,819.48x = 2,071,121.36 × 812,486.31
  4. Step 4: Simplify right side
    1,500,819.48x = 1,682,757,751,348.58
  5. Step 5: Solve for x
    x = 1,682,757,751,348.58/1,500,819.48
  6. Step 6: Final answer
    x = 1,121,225.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.