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Finding the Fourth Proportional to 623,738.47, 860,754.87 and 351,808.61

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Solution

The fourth proportional to 623,738.47, 860,754.87 and 351,808.61 is: 485,493.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,738.47 : 860,754.87 = 351,808.61 : x
  2. Step 2: Convert to fraction form
    623,738.47/860,754.87 = 351,808.61/x
  3. Step 3: Cross multiply
    623,738.47x = 860,754.87 × 351,808.61
  4. Step 4: Simplify right side
    623,738.47x = 302,820,974,365.43
  5. Step 5: Solve for x
    x = 302,820,974,365.43/623,738.47
  6. Step 6: Final answer
    x = 485,493.50

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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.