Home / 890,672.54-1,229,178.87-528,310.94

Finding the Fourth Proportional to 890,672.54, 1,229,178.87 and 528,310.94

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Solution

The fourth proportional to 890,672.54, 1,229,178.87 and 528,310.94 is: 729,099.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,672.54 : 1,229,178.87 = 528,310.94 : x
  2. Step 2: Convert to fraction form
    890,672.54/1,229,178.87 = 528,310.94/x
  3. Step 3: Cross multiply
    890,672.54x = 1,229,178.87 × 528,310.94
  4. Step 4: Simplify right side
    890,672.54x = 649,388,644,237.84
  5. Step 5: Solve for x
    x = 649,388,644,237.84/890,672.54
  6. Step 6: Final answer
    x = 729,099.21

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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.