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Finding the Fourth Proportional to 520,372.32, 780,558.46 and 146,395.32

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Solution

The fourth proportional to 520,372.32, 780,558.46 and 146,395.32 is: 219,592.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,372.32 : 780,558.46 = 146,395.32 : x
  2. Step 2: Convert to fraction form
    520,372.32/780,558.46 = 146,395.32/x
  3. Step 3: Cross multiply
    520,372.32x = 780,558.46 × 146,395.32
  4. Step 4: Simplify right side
    520,372.32x = 114,270,105,530.41
  5. Step 5: Solve for x
    x = 114,270,105,530.41/520,372.32
  6. Step 6: Final answer
    x = 219,592.97

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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.