Home / 780,147.60-1,170,221.40-479,653.80

Finding the Fourth Proportional to 780,147.60, 1,170,221.40 and 479,653.80

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Solution

The fourth proportional to 780,147.60, 1,170,221.40 and 479,653.80 is: 719,480.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,147.60 : 1,170,221.40 = 479,653.80 : x
  2. Step 2: Convert to fraction form
    780,147.60/1,170,221.40 = 479,653.80/x
  3. Step 3: Cross multiply
    780,147.60x = 1,170,221.40 × 479,653.80
  4. Step 4: Simplify right side
    780,147.60x = 561,301,141,351.32
  5. Step 5: Solve for x
    x = 561,301,141,351.32/780,147.60
  6. Step 6: Final answer
    x = 719,480.70

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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.