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Finding the Fourth Proportional to 623,724.84, 860,739.10 and 351,791.88

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Solution

The fourth proportional to 623,724.84, 860,739.10 and 351,791.88 is: 485,472.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,724.84 : 860,739.10 = 351,791.88 : x
  2. Step 2: Convert to fraction form
    623,724.84/860,739.10 = 351,791.88/x
  3. Step 3: Cross multiply
    623,724.84x = 860,739.10 × 351,791.88
  4. Step 4: Simplify right side
    623,724.84x = 302,801,026,178.51
  5. Step 5: Solve for x
    x = 302,801,026,178.51/623,724.84
  6. Step 6: Final answer
    x = 485,472.13

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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.