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Finding the Fourth Proportional to 520,369.31, 780,553.97 and 146,392.31

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Solution

The fourth proportional to 520,369.31, 780,553.97 and 146,392.31 is: 219,588.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,369.31 : 780,553.97 = 146,392.31 : x
  2. Step 2: Convert to fraction form
    520,369.31/780,553.97 = 146,392.31/x
  3. Step 3: Cross multiply
    520,369.31x = 780,553.97 × 146,392.31
  4. Step 4: Simplify right side
    520,369.31x = 114,267,100,516.37
  5. Step 5: Solve for x
    x = 114,267,100,516.37/520,369.31
  6. Step 6: Final answer
    x = 219,588.47

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Similar ratio
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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.