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Finding the Fourth Proportional to 548,816.08, 757,128.96 and 387,809.14

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Solution

The fourth proportional to 548,816.08, 757,128.96 and 387,809.14 is: 535,008.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,816.08 : 757,128.96 = 387,809.14 : x
  2. Step 2: Convert to fraction form
    548,816.08/757,128.96 = 387,809.14/x
  3. Step 3: Cross multiply
    548,816.08x = 757,128.96 × 387,809.14
  4. Step 4: Simplify right side
    548,816.08x = 293,621,530,846.69
  5. Step 5: Solve for x
    x = 293,621,530,846.69/548,816.08
  6. Step 6: Final answer
    x = 535,008.98

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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.