Home / 789,446.49-1,089,168.56-644,000.85

Finding the Fourth Proportional to 789,446.49, 1,089,168.56 and 644,000.85

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Solution

The fourth proportional to 789,446.49, 1,089,168.56 and 644,000.85 is: 888,502.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,446.49 : 1,089,168.56 = 644,000.85 : x
  2. Step 2: Convert to fraction form
    789,446.49/1,089,168.56 = 644,000.85/x
  3. Step 3: Cross multiply
    789,446.49x = 1,089,168.56 × 644,000.85
  4. Step 4: Simplify right side
    789,446.49x = 701,425,478,433.28
  5. Step 5: Solve for x
    x = 701,425,478,433.28/789,446.49
  6. Step 6: Final answer
    x = 888,502.88

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1.5x scale

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.