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Finding the Fourth Proportional to 978,900.08, 1,350,861.44 and 543,292.04

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Solution

The fourth proportional to 978,900.08, 1,350,861.44 and 543,292.04 is: 749,731.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,900.08 : 1,350,861.44 = 543,292.04 : x
  2. Step 2: Convert to fraction form
    978,900.08/1,350,861.44 = 543,292.04/x
  3. Step 3: Cross multiply
    978,900.08x = 1,350,861.44 × 543,292.04
  4. Step 4: Simplify right side
    978,900.08x = 733,912,267,494.94
  5. Step 5: Solve for x
    x = 733,912,267,494.94/978,900.08
  6. Step 6: Final answer
    x = 749,731.54

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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.