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Finding the Fourth Proportional to 519,391.95, 779,362.16 and 368,563.57

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Solution

The fourth proportional to 519,391.95, 779,362.16 and 368,563.57 is: 553,039.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,391.95 : 779,362.16 = 368,563.57 : x
  2. Step 2: Convert to fraction form
    519,391.95/779,362.16 = 368,563.57/x
  3. Step 3: Cross multiply
    519,391.95x = 779,362.16 × 368,563.57
  4. Step 4: Simplify right side
    519,391.95x = 287,244,496,221.29
  5. Step 5: Solve for x
    x = 287,244,496,221.29/519,391.95
  6. Step 6: Final answer
    x = 553,039.95

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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.