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Finding the Fourth Proportional to 623,842, 860,986.20 and 351,965.68

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Solution

The fourth proportional to 623,842, 860,986.20 and 351,965.68 is: 485,760.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,842 : 860,986.20 = 351,965.68 : x
  2. Step 2: Convert to fraction form
    623,842/860,986.20 = 351,965.68/x
  3. Step 3: Cross multiply
    623,842x = 860,986.20 × 351,965.68
  4. Step 4: Simplify right side
    623,842x = 303,037,593,353.62
  5. Step 5: Solve for x
    x = 303,037,593,353.62/623,842
  6. Step 6: Final answer
    x = 485,760.17

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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.