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Finding the Fourth Proportional to 684,990.99, 945,278.22 and 379,048.73

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Solution

The fourth proportional to 684,990.99, 945,278.22 and 379,048.73 is: 523,082.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,990.99 : 945,278.22 = 379,048.73 : x
  2. Step 2: Convert to fraction form
    684,990.99/945,278.22 = 379,048.73/x
  3. Step 3: Cross multiply
    684,990.99x = 945,278.22 × 379,048.73
  4. Step 4: Simplify right side
    684,990.99x = 358,306,511,150.86
  5. Step 5: Solve for x
    x = 358,306,511,150.86/684,990.99
  6. Step 6: Final answer
    x = 523,082.08

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1.5x scale

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.