Home / 780,306.20-1,170,216.30-307,136.60

Finding the Fourth Proportional to 780,306.20, 1,170,216.30 and 307,136.60

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Solution

The fourth proportional to 780,306.20, 1,170,216.30 and 307,136.60 is: 460,609.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,306.20 : 1,170,216.30 = 307,136.60 : x
  2. Step 2: Convert to fraction form
    780,306.20/1,170,216.30 = 307,136.60/x
  3. Step 3: Cross multiply
    780,306.20x = 1,170,216.30 × 307,136.60
  4. Step 4: Simplify right side
    780,306.20x = 359,416,255,646.58
  5. Step 5: Solve for x
    x = 359,416,255,646.58/780,306.20
  6. Step 6: Final answer
    x = 460,609.25

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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.