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Finding the Fourth Proportional to 647,195.30, 893,091.09 and 371,489.46

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Solution

The fourth proportional to 647,195.30, 893,091.09 and 371,489.46 is: 512,633.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,195.30 : 893,091.09 = 371,489.46 : x
  2. Step 2: Convert to fraction form
    647,195.30/893,091.09 = 371,489.46/x
  3. Step 3: Cross multiply
    647,195.30x = 893,091.09 × 371,489.46
  4. Step 4: Simplify right side
    647,195.30x = 331,773,927,683.64
  5. Step 5: Solve for x
    x = 331,773,927,683.64/647,195.30
  6. Step 6: Final answer
    x = 512,633.40

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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.