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Finding the Fourth Proportional to 722,418.34, 996,926.33 and 395,728.74

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Solution

The fourth proportional to 722,418.34, 996,926.33 and 395,728.74 is: 546,099.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,418.34 : 996,926.33 = 395,728.74 : x
  2. Step 2: Convert to fraction form
    722,418.34/996,926.33 = 395,728.74/x
  3. Step 3: Cross multiply
    722,418.34x = 996,926.33 × 395,728.74
  4. Step 4: Simplify right side
    722,418.34x = 394,512,400,443.72
  5. Step 5: Solve for x
    x = 394,512,400,443.72/722,418.34
  6. Step 6: Final answer
    x = 546,099.65

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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.