Home / 1,431,915.89-2,147,872.93-421,046.15

Finding the Fourth Proportional to 1,431,915.89, 2,147,872.93 and 421,046.15

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Solution

The fourth proportional to 1,431,915.89, 2,147,872.93 and 421,046.15 is: 631,568.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,915.89 : 2,147,872.93 = 421,046.15 : x
  2. Step 2: Convert to fraction form
    1,431,915.89/2,147,872.93 = 421,046.15/x
  3. Step 3: Cross multiply
    1,431,915.89x = 2,147,872.93 × 421,046.15
  4. Step 4: Simplify right side
    1,431,915.89x = 904,353,616,073.74
  5. Step 5: Solve for x
    x = 904,353,616,073.74/1,431,915.89
  6. Step 6: Final answer
    x = 631,568.95

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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.