Home / 1,320,422.70-1,981,290.15-521,730.30

Finding the Fourth Proportional to 1,320,422.70, 1,981,290.15 and 521,730.30

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Solution

The fourth proportional to 1,320,422.70, 1,981,290.15 and 521,730.30 is: 782,854.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,422.70 : 1,981,290.15 = 521,730.30 : x
  2. Step 2: Convert to fraction form
    1,320,422.70/1,981,290.15 = 521,730.30/x
  3. Step 3: Cross multiply
    1,320,422.70x = 1,981,290.15 × 521,730.30
  4. Step 4: Simplify right side
    1,320,422.70x = 1,033,699,104,346.55
  5. Step 5: Solve for x
    x = 1,033,699,104,346.55/1,320,422.70
  6. Step 6: Final answer
    x = 782,854.69

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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.