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Finding the Fourth Proportional to 482,817.42, 665,825.18 and 289,194.21

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Solution

The fourth proportional to 482,817.42, 665,825.18 and 289,194.21 is: 398,810.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,817.42 : 665,825.18 = 289,194.21 : x
  2. Step 2: Convert to fraction form
    482,817.42/665,825.18 = 289,194.21/x
  3. Step 3: Cross multiply
    482,817.42x = 665,825.18 × 289,194.21
  4. Step 4: Simplify right side
    482,817.42x = 192,552,784,322.07
  5. Step 5: Solve for x
    x = 192,552,784,322.07/482,817.42
  6. Step 6: Final answer
    x = 398,810.77

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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.