Home / 1,317,628.80-1,976,443.20-320,356.80

Finding the Fourth Proportional to 1,317,628.80, 1,976,443.20 and 320,356.80

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Solution

The fourth proportional to 1,317,628.80, 1,976,443.20 and 320,356.80 is: 480,535.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,628.80 : 1,976,443.20 = 320,356.80 : x
  2. Step 2: Convert to fraction form
    1,317,628.80/1,976,443.20 = 320,356.80/x
  3. Step 3: Cross multiply
    1,317,628.80x = 1,976,443.20 × 320,356.80
  4. Step 4: Simplify right side
    1,317,628.80x = 633,167,018,933.76
  5. Step 5: Solve for x
    x = 633,167,018,933.76/1,317,628.80
  6. Step 6: Final answer
    x = 480,535.20

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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.