Home / 789,780.60-1,089,803.29-445,596.69

Finding the Fourth Proportional to 789,780.60, 1,089,803.29 and 445,596.69

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Solution

The fourth proportional to 789,780.60, 1,089,803.29 and 445,596.69 is: 614,870.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,780.60 : 1,089,803.29 = 445,596.69 : x
  2. Step 2: Convert to fraction form
    789,780.60/1,089,803.29 = 445,596.69/x
  3. Step 3: Cross multiply
    789,780.60x = 1,089,803.29 × 445,596.69
  4. Step 4: Simplify right side
    789,780.60x = 485,612,741,330.13
  5. Step 5: Solve for x
    x = 485,612,741,330.13/789,780.60
  6. Step 6: Final answer
    x = 614,870.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.