Home / 1,317,692.80-1,976,539.20-320,420.80

Finding the Fourth Proportional to 1,317,692.80, 1,976,539.20 and 320,420.80

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Solution

The fourth proportional to 1,317,692.80, 1,976,539.20 and 320,420.80 is: 480,631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,692.80 : 1,976,539.20 = 320,420.80 : x
  2. Step 2: Convert to fraction form
    1,317,692.80/1,976,539.20 = 320,420.80/x
  3. Step 3: Cross multiply
    1,317,692.80x = 1,976,539.20 × 320,420.80
  4. Step 4: Simplify right side
    1,317,692.80x = 633,324,271,695.36
  5. Step 5: Solve for x
    x = 633,324,271,695.36/1,317,692.80
  6. Step 6: Final answer
    x = 480,631.20

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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.