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Finding the Fourth Proportional to 490,345.26, 736,625.12 and 290,796.55

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Solution

The fourth proportional to 490,345.26, 736,625.12 and 290,796.55 is: 436,851.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,345.26 : 736,625.12 = 290,796.55 : x
  2. Step 2: Convert to fraction form
    490,345.26/736,625.12 = 290,796.55/x
  3. Step 3: Cross multiply
    490,345.26x = 736,625.12 × 290,796.55
  4. Step 4: Simplify right side
    490,345.26x = 214,208,041,879.52
  5. Step 5: Solve for x
    x = 214,208,041,879.52/490,345.26
  6. Step 6: Final answer
    x = 436,851.46

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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.