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Finding the Fourth Proportional to 612,078.66, 844,601.47 and 353,916.54

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Solution

The fourth proportional to 612,078.66, 844,601.47 and 353,916.54 is: 488,366.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,078.66 : 844,601.47 = 353,916.54 : x
  2. Step 2: Convert to fraction form
    612,078.66/844,601.47 = 353,916.54/x
  3. Step 3: Cross multiply
    612,078.66x = 844,601.47 × 353,916.54
  4. Step 4: Simplify right side
    612,078.66x = 298,918,427,216.45
  5. Step 5: Solve for x
    x = 298,918,427,216.45/612,078.66
  6. Step 6: Final answer
    x = 488,366.04

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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.