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Finding the Fourth Proportional to 978,601.60, 1,467,902.40 and 680,003.20

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Solution

The fourth proportional to 978,601.60, 1,467,902.40 and 680,003.20 is: 1,020,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,601.60 : 1,467,902.40 = 680,003.20 : x
  2. Step 2: Convert to fraction form
    978,601.60/1,467,902.40 = 680,003.20/x
  3. Step 3: Cross multiply
    978,601.60x = 1,467,902.40 × 680,003.20
  4. Step 4: Simplify right side
    978,601.60x = 998,178,329,287.68
  5. Step 5: Solve for x
    x = 998,178,329,287.68/978,601.60
  6. Step 6: Final answer
    x = 1,020,004.80

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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.