Home / 1,317,710.80-1,976,566.20-320,438.80

Finding the Fourth Proportional to 1,317,710.80, 1,976,566.20 and 320,438.80

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Solution

The fourth proportional to 1,317,710.80, 1,976,566.20 and 320,438.80 is: 480,658.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,710.80 : 1,976,566.20 = 320,438.80 : x
  2. Step 2: Convert to fraction form
    1,317,710.80/1,976,566.20 = 320,438.80/x
  3. Step 3: Cross multiply
    1,317,710.80x = 1,976,566.20 × 320,438.80
  4. Step 4: Simplify right side
    1,317,710.80x = 633,368,501,248.56
  5. Step 5: Solve for x
    x = 633,368,501,248.56/1,317,710.80
  6. Step 6: Final answer
    x = 480,658.20

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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.