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Finding the Fourth Proportional to 978,233.80, 1,467,350.70 and 862,760.20

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Solution

The fourth proportional to 978,233.80, 1,467,350.70 and 862,760.20 is: 1,294,140.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,233.80 : 1,467,350.70 = 862,760.20 : x
  2. Step 2: Convert to fraction form
    978,233.80/1,467,350.70 = 862,760.20/x
  3. Step 3: Cross multiply
    978,233.80x = 1,467,350.70 × 862,760.20
  4. Step 4: Simplify right side
    978,233.80x = 1,265,971,783,402.14
  5. Step 5: Solve for x
    x = 1,265,971,783,402.14/978,233.80
  6. Step 6: Final answer
    x = 1,294,140.30

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Similar ratio
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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.