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Finding the Fourth Proportional to 550,781.73, 759,650.27 and 398,391.57

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Solution

The fourth proportional to 550,781.73, 759,650.27 and 398,391.57 is: 549,470.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,781.73 : 759,650.27 = 398,391.57 : x
  2. Step 2: Convert to fraction form
    550,781.73/759,650.27 = 398,391.57/x
  3. Step 3: Cross multiply
    550,781.73x = 759,650.27 × 398,391.57
  4. Step 4: Simplify right side
    550,781.73x = 302,638,261,724.27
  5. Step 5: Solve for x
    x = 302,638,261,724.27/550,781.73
  6. Step 6: Final answer
    x = 549,470.41

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1.5x scale

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.