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Finding the Fourth Proportional to 490,392.16, 736,695.57 and 290,843.46

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Solution

The fourth proportional to 490,392.16, 736,695.57 and 290,843.46 is: 436,921.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,392.16 : 736,695.57 = 290,843.46 : x
  2. Step 2: Convert to fraction form
    490,392.16/736,695.57 = 290,843.46/x
  3. Step 3: Cross multiply
    490,392.16x = 736,695.57 × 290,843.46
  4. Step 4: Simplify right side
    490,392.16x = 214,263,089,636.14
  5. Step 5: Solve for x
    x = 214,263,089,636.14/490,392.16
  6. Step 6: Final answer
    x = 436,921.93

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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.