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Finding the Fourth Proportional to 998,123.60, 1,494,852.60 and 978,078.80

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Solution

The fourth proportional to 998,123.60, 1,494,852.60 and 978,078.80 is: 1,464,832.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,123.60 : 1,494,852.60 = 978,078.80 : x
  2. Step 2: Convert to fraction form
    998,123.60/1,494,852.60 = 978,078.80/x
  3. Step 3: Cross multiply
    998,123.60x = 1,494,852.60 × 978,078.80
  4. Step 4: Simplify right side
    998,123.60x = 1,462,083,637,184.88
  5. Step 5: Solve for x
    x = 1,462,083,637,184.88/998,123.60
  6. Step 6: Final answer
    x = 1,464,832.25

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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.