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Finding the Fourth Proportional to 558,361.98, 770,676.40 and 316,785.96

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Solution

The fourth proportional to 558,361.98, 770,676.40 and 316,785.96 is: 437,242.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,361.98 : 770,676.40 = 316,785.96 : x
  2. Step 2: Convert to fraction form
    558,361.98/770,676.40 = 316,785.96/x
  3. Step 3: Cross multiply
    558,361.98x = 770,676.40 × 316,785.96
  4. Step 4: Simplify right side
    558,361.98x = 244,139,462,431.38
  5. Step 5: Solve for x
    x = 244,139,462,431.38/558,361.98
  6. Step 6: Final answer
    x = 437,242.28

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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.