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Finding the Fourth Proportional to 998,060.60, 1,494,758.10 and 978,015.80

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Solution

The fourth proportional to 998,060.60, 1,494,758.10 and 978,015.80 is: 1,464,737.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,060.60 : 1,494,758.10 = 978,015.80 : x
  2. Step 2: Convert to fraction form
    998,060.60/1,494,758.10 = 978,015.80/x
  3. Step 3: Cross multiply
    998,060.60x = 1,494,758.10 × 978,015.80
  4. Step 4: Simplify right side
    998,060.60x = 1,461,897,038,977.98
  5. Step 5: Solve for x
    x = 1,461,897,038,977.98/998,060.60
  6. Step 6: Final answer
    x = 1,464,737.75

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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.