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Finding the Fourth Proportional to 550,991.70, 760,272.48 and 309,284.46

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Solution

The fourth proportional to 550,991.70, 760,272.48 and 309,284.46 is: 426,758.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,991.70 : 760,272.48 = 309,284.46 : x
  2. Step 2: Convert to fraction form
    550,991.70/760,272.48 = 309,284.46/x
  3. Step 3: Cross multiply
    550,991.70x = 760,272.48 × 309,284.46
  4. Step 4: Simplify right side
    550,991.70x = 235,140,463,429.66
  5. Step 5: Solve for x
    x = 235,140,463,429.66/550,991.70
  6. Step 6: Final answer
    x = 426,758.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.