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Finding the Fourth Proportional to 859,626, 1,289,364.67 and 290,994.96

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Solution

The fourth proportional to 859,626, 1,289,364.67 and 290,994.96 is: 436,467.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,626 : 1,289,364.67 = 290,994.96 : x
  2. Step 2: Convert to fraction form
    859,626/1,289,364.67 = 290,994.96/x
  3. Step 3: Cross multiply
    859,626x = 1,289,364.67 × 290,994.96
  4. Step 4: Simplify right side
    859,626x = 375,198,620,572.06
  5. Step 5: Solve for x
    x = 375,198,620,572.06/859,626
  6. Step 6: Final answer
    x = 436,467.28

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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.