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Finding the Fourth Proportional to 457,076.50, 685,877.28 and 356,955.64

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Solution

The fourth proportional to 457,076.50, 685,877.28 and 356,955.64 is: 535,638.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,076.50 : 685,877.28 = 356,955.64 : x
  2. Step 2: Convert to fraction form
    457,076.50/685,877.28 = 356,955.64/x
  3. Step 3: Cross multiply
    457,076.50x = 685,877.28 × 356,955.64
  4. Step 4: Simplify right side
    457,076.50x = 244,827,763,443.86
  5. Step 5: Solve for x
    x = 244,827,763,443.86/457,076.50
  6. Step 6: Final answer
    x = 535,638.48

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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.