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Finding the Fourth Proportional to 978,195.40, 1,467,293.10 and 659,330.80

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Solution

The fourth proportional to 978,195.40, 1,467,293.10 and 659,330.80 is: 988,996.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,195.40 : 1,467,293.10 = 659,330.80 : x
  2. Step 2: Convert to fraction form
    978,195.40/1,467,293.10 = 659,330.80/x
  3. Step 3: Cross multiply
    978,195.40x = 1,467,293.10 × 659,330.80
  4. Step 4: Simplify right side
    978,195.40x = 967,431,533,457.48
  5. Step 5: Solve for x
    x = 967,431,533,457.48/978,195.40
  6. Step 6: Final answer
    x = 988,996.20

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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.