Home / 780,120.35-1,076,545.26-435,958.96

Finding the Fourth Proportional to 780,120.35, 1,076,545.26 and 435,958.96

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Solution

The fourth proportional to 780,120.35, 1,076,545.26 and 435,958.96 is: 601,611.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,120.35 : 1,076,545.26 = 435,958.96 : x
  2. Step 2: Convert to fraction form
    780,120.35/1,076,545.26 = 435,958.96/x
  3. Step 3: Cross multiply
    780,120.35x = 1,076,545.26 × 435,958.96
  4. Step 4: Simplify right side
    780,120.35x = 469,329,551,942.53
  5. Step 5: Solve for x
    x = 469,329,551,942.53/780,120.35
  6. Step 6: Final answer
    x = 601,611.73

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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.