Home / 28,647,840-42,972,945.84-8,453,082

Finding the Fourth Proportional to 28,647,840, 42,972,945.84 and 8,453,082

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Solution

The fourth proportional to 28,647,840, 42,972,945.84 and 8,453,082 is: 12,679,972.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,647,840 : 42,972,945.84 = 8,453,082 : x
  2. Step 2: Convert to fraction form
    28,647,840/42,972,945.84 = 8,453,082/x
  3. Step 3: Cross multiply
    28,647,840x = 42,972,945.84 × 8,453,082
  4. Step 4: Simplify right side
    28,647,840x = 363,253,834,967,078.94
  5. Step 5: Solve for x
    x = 363,253,834,967,078.94/28,647,840
  6. Step 6: Final answer
    x = 12,679,972.90

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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.