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Finding the Fourth Proportional to 722,355.80, 996,861.83 and 395,698.89

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Solution

The fourth proportional to 722,355.80, 996,861.83 and 395,698.89 is: 546,070.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,355.80 : 996,861.83 = 395,698.89 : x
  2. Step 2: Convert to fraction form
    722,355.80/996,861.83 = 395,698.89/x
  3. Step 3: Cross multiply
    722,355.80x = 996,861.83 × 395,698.89
  4. Step 4: Simplify right side
    722,355.80x = 394,457,121,374.11
  5. Step 5: Solve for x
    x = 394,457,121,374.11/722,355.80
  6. Step 6: Final answer
    x = 546,070.40

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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.