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Finding the Fourth Proportional to 478,874.37, 718,311.54 and 454,928.77

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Solution

The fourth proportional to 478,874.37, 718,311.54 and 454,928.77 is: 682,393.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,874.37 : 718,311.54 = 454,928.77 : x
  2. Step 2: Convert to fraction form
    478,874.37/718,311.54 = 454,928.77/x
  3. Step 3: Cross multiply
    478,874.37x = 718,311.54 × 454,928.77
  4. Step 4: Simplify right side
    478,874.37x = 326,780,585,369.01
  5. Step 5: Solve for x
    x = 326,780,585,369.01/478,874.37
  6. Step 6: Final answer
    x = 682,393.14

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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.