Home / 818,619.94-1,121,513.39-787,938.67

Finding the Fourth Proportional to 818,619.94, 1,121,513.39 and 787,938.67

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Solution

The fourth proportional to 818,619.94, 1,121,513.39 and 787,938.67 is: 1,079,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,619.94 : 1,121,513.39 = 787,938.67 : x
  2. Step 2: Convert to fraction form
    818,619.94/1,121,513.39 = 787,938.67/x
  3. Step 3: Cross multiply
    818,619.94x = 1,121,513.39 × 787,938.67
  4. Step 4: Simplify right side
    818,619.94x = 883,683,768,903.79
  5. Step 5: Solve for x
    x = 883,683,768,903.79/818,619.94
  6. Step 6: Final answer
    x = 1,079,479.90

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.