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Finding the Fourth Proportional to 448,366.15, 617,485.57 and 438,568.39

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Solution

The fourth proportional to 448,366.15, 617,485.57 and 438,568.39 is: 603,992.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,366.15 : 617,485.57 = 438,568.39 : x
  2. Step 2: Convert to fraction form
    448,366.15/617,485.57 = 438,568.39/x
  3. Step 3: Cross multiply
    448,366.15x = 617,485.57 × 438,568.39
  4. Step 4: Simplify right side
    448,366.15x = 270,809,652,283.13
  5. Step 5: Solve for x
    x = 270,809,652,283.13/448,366.15
  6. Step 6: Final answer
    x = 603,992.19

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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.