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Finding the Fourth Proportional to 978,198.40, 1,467,297.60 and 347,030.20

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Solution

The fourth proportional to 978,198.40, 1,467,297.60 and 347,030.20 is: 520,545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,198.40 : 1,467,297.60 = 347,030.20 : x
  2. Step 2: Convert to fraction form
    978,198.40/1,467,297.60 = 347,030.20/x
  3. Step 3: Cross multiply
    978,198.40x = 1,467,297.60 × 347,030.20
  4. Step 4: Simplify right side
    978,198.40x = 509,196,579,587.52
  5. Step 5: Solve for x
    x = 509,196,579,587.52/978,198.40
  6. Step 6: Final answer
    x = 520,545.30

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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.