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Finding the Fourth Proportional to 475,662.96, 713,626.20 and 387,745.56

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Solution

The fourth proportional to 475,662.96, 713,626.20 and 387,745.56 is: 581,725.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,662.96 : 713,626.20 = 387,745.56 : x
  2. Step 2: Convert to fraction form
    475,662.96/713,626.20 = 387,745.56/x
  3. Step 3: Cross multiply
    475,662.96x = 713,626.20 × 387,745.56
  4. Step 4: Simplify right side
    475,662.96x = 276,705,390,549.67
  5. Step 5: Solve for x
    x = 276,705,390,549.67/475,662.96
  6. Step 6: Final answer
    x = 581,725.75

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1.5x scale

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.