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Finding the Fourth Proportional to 450,448.77, 621,576.98 and 304,958.60

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Solution

The fourth proportional to 450,448.77, 621,576.98 and 304,958.60 is: 420,814.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,448.77 : 621,576.98 = 304,958.60 : x
  2. Step 2: Convert to fraction form
    450,448.77/621,576.98 = 304,958.60/x
  3. Step 3: Cross multiply
    450,448.77x = 621,576.98 × 304,958.60
  4. Step 4: Simplify right side
    450,448.77x = 189,555,240,980.35
  5. Step 5: Solve for x
    x = 189,555,240,980.35/450,448.77
  6. Step 6: Final answer
    x = 420,814.20

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1.5x scale

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.