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Finding the Fourth Proportional to 667,695.83, 921,465.44 and 377,206.62

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Solution

The fourth proportional to 667,695.83, 921,465.44 and 377,206.62 is: 520,570.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,695.83 : 921,465.44 = 377,206.62 : x
  2. Step 2: Convert to fraction form
    667,695.83/921,465.44 = 377,206.62/x
  3. Step 3: Cross multiply
    667,695.83x = 921,465.44 × 377,206.62
  4. Step 4: Simplify right side
    667,695.83x = 347,582,862,183.18
  5. Step 5: Solve for x
    x = 347,582,862,183.18/667,695.83
  6. Step 6: Final answer
    x = 520,570.67

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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.