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Finding the Fourth Proportional to 978,205.70, 1,467,308.55 and 673,775.30

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Solution

The fourth proportional to 978,205.70, 1,467,308.55 and 673,775.30 is: 1,010,662.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,205.70 : 1,467,308.55 = 673,775.30 : x
  2. Step 2: Convert to fraction form
    978,205.70/1,467,308.55 = 673,775.30/x
  3. Step 3: Cross multiply
    978,205.70x = 1,467,308.55 × 673,775.30
  4. Step 4: Simplify right side
    978,205.70x = 988,636,258,468.82
  5. Step 5: Solve for x
    x = 988,636,258,468.82/978,205.70
  6. Step 6: Final answer
    x = 1,010,662.95

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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.