Home / 1,317,703.60-1,976,555.40-320,431.60

Finding the Fourth Proportional to 1,317,703.60, 1,976,555.40 and 320,431.60

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Solution

The fourth proportional to 1,317,703.60, 1,976,555.40 and 320,431.60 is: 480,647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,703.60 : 1,976,555.40 = 320,431.60 : x
  2. Step 2: Convert to fraction form
    1,317,703.60/1,976,555.40 = 320,431.60/x
  3. Step 3: Cross multiply
    1,317,703.60x = 1,976,555.40 × 320,431.60
  4. Step 4: Simplify right side
    1,317,703.60x = 633,350,809,310.64
  5. Step 5: Solve for x
    x = 633,350,809,310.64/1,317,703.60
  6. Step 6: Final answer
    x = 480,647.40

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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.