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Finding the Fourth Proportional to 673,990.79, 1,010,705.09 and 274,360.28

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Solution

The fourth proportional to 673,990.79, 1,010,705.09 and 274,360.28 is: 411,425.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,990.79 : 1,010,705.09 = 274,360.28 : x
  2. Step 2: Convert to fraction form
    673,990.79/1,010,705.09 = 274,360.28/x
  3. Step 3: Cross multiply
    673,990.79x = 1,010,705.09 × 274,360.28
  4. Step 4: Simplify right side
    673,990.79x = 277,297,325,064.50
  5. Step 5: Solve for x
    x = 277,297,325,064.50/673,990.79
  6. Step 6: Final answer
    x = 411,425.99

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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.