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Finding the Fourth Proportional to 623,755.81, 860,747.33 and 351,807.48

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Solution

The fourth proportional to 623,755.81, 860,747.33 and 351,807.48 is: 485,474.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,755.81 : 860,747.33 = 351,807.48 : x
  2. Step 2: Convert to fraction form
    623,755.81/860,747.33 = 351,807.48/x
  3. Step 3: Cross multiply
    623,755.81x = 860,747.33 × 351,807.48
  4. Step 4: Simplify right side
    623,755.81x = 302,817,351,752.77
  5. Step 5: Solve for x
    x = 302,817,351,752.77/623,755.81
  6. Step 6: Final answer
    x = 485,474.20

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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.