Home / 448,618.21-672,213.34-313,937.28

Finding the Fourth Proportional to 448,618.21, 672,213.34 and 313,937.28

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Solution

The fourth proportional to 448,618.21, 672,213.34 and 313,937.28 is: 470,406.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,618.21 : 672,213.34 = 313,937.28 : x
  2. Step 2: Convert to fraction form
    448,618.21/672,213.34 = 313,937.28/x
  3. Step 3: Cross multiply
    448,618.21x = 672,213.34 × 313,937.28
  4. Step 4: Simplify right side
    448,618.21x = 211,032,825,969.63
  5. Step 5: Solve for x
    x = 211,032,825,969.63/448,618.21
  6. Step 6: Final answer
    x = 470,406.29

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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.