Home / 860,068.98-1,290,107.60-261,035.34

Finding the Fourth Proportional to 860,068.98, 1,290,107.60 and 261,035.34

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Solution

The fourth proportional to 860,068.98, 1,290,107.60 and 261,035.34 is: 391,554.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,068.98 : 1,290,107.60 = 261,035.34 : x
  2. Step 2: Convert to fraction form
    860,068.98/1,290,107.60 = 261,035.34/x
  3. Step 3: Cross multiply
    860,068.98x = 1,290,107.60 × 261,035.34
  4. Step 4: Simplify right side
    860,068.98x = 336,763,670,838.39
  5. Step 5: Solve for x
    x = 336,763,670,838.39/860,068.98
  6. Step 6: Final answer
    x = 391,554.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.