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Finding the Fourth Proportional to 448,718.22, 617,971.41 and 438,920.46

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Solution

The fourth proportional to 448,718.22, 617,971.41 and 438,920.46 is: 604,478.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,718.22 : 617,971.41 = 438,920.46 : x
  2. Step 2: Convert to fraction form
    448,718.22/617,971.41 = 438,920.46/x
  3. Step 3: Cross multiply
    448,718.22x = 617,971.41 × 438,920.46
  4. Step 4: Simplify right side
    448,718.22x = 271,240,295,544.05
  5. Step 5: Solve for x
    x = 271,240,295,544.05/448,718.22
  6. Step 6: Final answer
    x = 604,478.01

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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.