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Finding the Fourth Proportional to 1,224,916.40, 1,837,374.60 and 371,986.40

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Solution

The fourth proportional to 1,224,916.40, 1,837,374.60 and 371,986.40 is: 557,979.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,916.40 : 1,837,374.60 = 371,986.40 : x
  2. Step 2: Convert to fraction form
    1,224,916.40/1,837,374.60 = 371,986.40/x
  3. Step 3: Cross multiply
    1,224,916.40x = 1,837,374.60 × 371,986.40
  4. Step 4: Simplify right side
    1,224,916.40x = 683,478,362,905.44
  5. Step 5: Solve for x
    x = 683,478,362,905.44/1,224,916.40
  6. Step 6: Final answer
    x = 557,979.60

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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.