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Finding the Fourth Proportional to 448,085.46, 670,548.69 and 279,684.84

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Solution

The fourth proportional to 448,085.46, 670,548.69 and 279,684.84 is: 418,541.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,085.46 : 670,548.69 = 279,684.84 : x
  2. Step 2: Convert to fraction form
    448,085.46/670,548.69 = 279,684.84/x
  3. Step 3: Cross multiply
    448,085.46x = 670,548.69 × 279,684.84
  4. Step 4: Simplify right side
    448,085.46x = 187,542,303,074.86
  5. Step 5: Solve for x
    x = 187,542,303,074.86/448,085.46
  6. Step 6: Final answer
    x = 418,541.37

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1.5x scale

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.