Home / 1,317,629.80-1,976,444.70-320,357.80

Finding the Fourth Proportional to 1,317,629.80, 1,976,444.70 and 320,357.80

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Solution

The fourth proportional to 1,317,629.80, 1,976,444.70 and 320,357.80 is: 480,536.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,629.80 : 1,976,444.70 = 320,357.80 : x
  2. Step 2: Convert to fraction form
    1,317,629.80/1,976,444.70 = 320,357.80/x
  3. Step 3: Cross multiply
    1,317,629.80x = 1,976,444.70 × 320,357.80
  4. Step 4: Simplify right side
    1,317,629.80x = 633,169,475,913.66
  5. Step 5: Solve for x
    x = 633,169,475,913.66/1,317,629.80
  6. Step 6: Final answer
    x = 480,536.70

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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.