Home / 460,433.16-690,126.01-280,121.11

Finding the Fourth Proportional to 460,433.16, 690,126.01 and 280,121.11

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Solution

The fourth proportional to 460,433.16, 690,126.01 and 280,121.11 is: 419,863.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,433.16 : 690,126.01 = 280,121.11 : x
  2. Step 2: Convert to fraction form
    460,433.16/690,126.01 = 280,121.11/x
  3. Step 3: Cross multiply
    460,433.16x = 690,126.01 × 280,121.11
  4. Step 4: Simplify right side
    460,433.16x = 193,318,863,961.07
  5. Step 5: Solve for x
    x = 193,318,863,961.07/460,433.16
  6. Step 6: Final answer
    x = 419,863.03

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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.