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Finding the Fourth Proportional to 663,604.70, 915,735.03 and 377,085.02

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Solution

The fourth proportional to 663,604.70, 915,735.03 and 377,085.02 is: 520,354.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,604.70 : 915,735.03 = 377,085.02 : x
  2. Step 2: Convert to fraction form
    663,604.70/915,735.03 = 377,085.02/x
  3. Step 3: Cross multiply
    663,604.70x = 915,735.03 × 377,085.02
  4. Step 4: Simplify right side
    663,604.70x = 345,309,962,102.25
  5. Step 5: Solve for x
    x = 345,309,962,102.25/663,604.70
  6. Step 6: Final answer
    x = 520,354.91

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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.