Home / 815,731.40-1,222,401.90-731,491.40

Finding the Fourth Proportional to 815,731.40, 1,222,401.90 and 731,491.40

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Solution

The fourth proportional to 815,731.40, 1,222,401.90 and 731,491.40 is: 1,096,165.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,731.40 : 1,222,401.90 = 731,491.40 : x
  2. Step 2: Convert to fraction form
    815,731.40/1,222,401.90 = 731,491.40/x
  3. Step 3: Cross multiply
    815,731.40x = 1,222,401.90 × 731,491.40
  4. Step 4: Simplify right side
    815,731.40x = 894,176,477,193.66
  5. Step 5: Solve for x
    x = 894,176,477,193.66/815,731.40
  6. Step 6: Final answer
    x = 1,096,165.33

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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.