Home / 770,824.80-1,154,768.40-415,720.80

Finding the Fourth Proportional to 770,824.80, 1,154,768.40 and 415,720.80

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Solution

The fourth proportional to 770,824.80, 1,154,768.40 and 415,720.80 is: 622,789.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,824.80 : 1,154,768.40 = 415,720.80 : x
  2. Step 2: Convert to fraction form
    770,824.80/1,154,768.40 = 415,720.80/x
  3. Step 3: Cross multiply
    770,824.80x = 1,154,768.40 × 415,720.80
  4. Step 4: Simplify right side
    770,824.80x = 480,061,243,062.72
  5. Step 5: Solve for x
    x = 480,061,243,062.72/770,824.80
  6. Step 6: Final answer
    x = 622,789.05

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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.