Home / 860,257.44-1,290,302.73-261,223.79

Finding the Fourth Proportional to 860,257.44, 1,290,302.73 and 261,223.79

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Solution

The fourth proportional to 860,257.44, 1,290,302.73 and 261,223.79 is: 391,810.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,257.44 : 1,290,302.73 = 261,223.79 : x
  2. Step 2: Convert to fraction form
    860,257.44/1,290,302.73 = 261,223.79/x
  3. Step 3: Cross multiply
    860,257.44x = 1,290,302.73 × 261,223.79
  4. Step 4: Simplify right side
    860,257.44x = 337,057,762,926.43
  5. Step 5: Solve for x
    x = 337,057,762,926.43/860,257.44
  6. Step 6: Final answer
    x = 391,810.34

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1.5x scale

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.