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Finding the Fourth Proportional to 448,367.15, 617,486.95 and 438,569.39

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Solution

The fourth proportional to 448,367.15, 617,486.95 and 438,569.39 is: 603,993.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,367.15 : 617,486.95 = 438,569.39 : x
  2. Step 2: Convert to fraction form
    448,367.15/617,486.95 = 438,569.39/x
  3. Step 3: Cross multiply
    448,367.15x = 617,486.95 × 438,569.39
  4. Step 4: Simplify right side
    448,367.15x = 270,810,874,994.46
  5. Step 5: Solve for x
    x = 270,810,874,994.46/448,367.15
  6. Step 6: Final answer
    x = 603,993.57

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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.