Home / 860,299.82-1,290,446.85-220,602.86

Finding the Fourth Proportional to 860,299.82, 1,290,446.85 and 220,602.86

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Solution

The fourth proportional to 860,299.82, 1,290,446.85 and 220,602.86 is: 330,903.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,299.82 : 1,290,446.85 = 220,602.86 : x
  2. Step 2: Convert to fraction form
    860,299.82/1,290,446.85 = 220,602.86/x
  3. Step 3: Cross multiply
    860,299.82x = 1,290,446.85 × 220,602.86
  4. Step 4: Simplify right side
    860,299.82x = 284,676,265,787.99
  5. Step 5: Solve for x
    x = 284,676,265,787.99/860,299.82
  6. Step 6: Final answer
    x = 330,903.55

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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.