Home / 778,779.20-1,167,520.80-329,844.80

Finding the Fourth Proportional to 778,779.20, 1,167,520.80 and 329,844.80

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Solution

The fourth proportional to 778,779.20, 1,167,520.80 and 329,844.80 is: 494,492.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,779.20 : 1,167,520.80 = 329,844.80 : x
  2. Step 2: Convert to fraction form
    778,779.20/1,167,520.80 = 329,844.80/x
  3. Step 3: Cross multiply
    778,779.20x = 1,167,520.80 × 329,844.80
  4. Step 4: Simplify right side
    778,779.20x = 385,100,664,771.84
  5. Step 5: Solve for x
    x = 385,100,664,771.84/778,779.20
  6. Step 6: Final answer
    x = 494,492.75

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1.5x scale

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.