Home / 1,320,559.20-1,980,838.80-788,680.80

Finding the Fourth Proportional to 1,320,559.20, 1,980,838.80 and 788,680.80

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Solution

The fourth proportional to 1,320,559.20, 1,980,838.80 and 788,680.80 is: 1,183,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,559.20 : 1,980,838.80 = 788,680.80 : x
  2. Step 2: Convert to fraction form
    1,320,559.20/1,980,838.80 = 788,680.80/x
  3. Step 3: Cross multiply
    1,320,559.20x = 1,980,838.80 × 788,680.80
  4. Step 4: Simplify right side
    1,320,559.20x = 1,562,249,529,455.04
  5. Step 5: Solve for x
    x = 1,562,249,529,455.04/1,320,559.20
  6. Step 6: Final answer
    x = 1,183,021.20

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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.