Home / 815,745,688.21-1,222,747,358.45-465,237,025.73

Finding the Fourth Proportional to 815,745,688.21, 1,222,747,358.45 and 465,237,025.73

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Solution

The fourth proportional to 815,745,688.21, 1,222,747,358.45 and 465,237,025.73 is: 697,358,689.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,745,688.21 : 1,222,747,358.45 = 465,237,025.73 : x
  2. Step 2: Convert to fraction form
    815,745,688.21/1,222,747,358.45 = 465,237,025.73/x
  3. Step 3: Cross multiply
    815,745,688.21x = 1,222,747,358.45 × 465,237,025.73
  4. Step 4: Simplify right side
    815,745,688.21x = 568,867,344,258,378,496
  5. Step 5: Solve for x
    x = 568,867,344,258,378,496/815,745,688.21
  6. Step 6: Final answer
    x = 697,358,689.70

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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.