Home / 860,245.90-1,290,285.47-261,212.32

Finding the Fourth Proportional to 860,245.90, 1,290,285.47 and 261,212.32

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Solution

The fourth proportional to 860,245.90, 1,290,285.47 and 261,212.32 is: 391,793.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,245.90 : 1,290,285.47 = 261,212.32 : x
  2. Step 2: Convert to fraction form
    860,245.90/1,290,285.47 = 261,212.32/x
  3. Step 3: Cross multiply
    860,245.90x = 1,290,285.47 × 261,212.32
  4. Step 4: Simplify right side
    860,245.90x = 337,038,464,306.70
  5. Step 5: Solve for x
    x = 337,038,464,306.70/860,245.90
  6. Step 6: Final answer
    x = 391,793.17

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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.