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Finding the Fourth Proportional to 1,252,837.03, 1,728,916.23 and 679,877.21

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Solution

The fourth proportional to 1,252,837.03, 1,728,916.23 and 679,877.21 is: 938,231.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252,837.03 : 1,728,916.23 = 679,877.21 : x
  2. Step 2: Convert to fraction form
    1,252,837.03/1,728,916.23 = 679,877.21/x
  3. Step 3: Cross multiply
    1,252,837.03x = 1,728,916.23 × 679,877.21
  4. Step 4: Simplify right side
    1,252,837.03x = 1,175,450,740,560.18
  5. Step 5: Solve for x
    x = 1,175,450,740,560.18/1,252,837.03
  6. Step 6: Final answer
    x = 938,231.16

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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.