Home / 454,583.75-683,370.47-421,700.78

Finding the Fourth Proportional to 454,583.75, 683,370.47 and 421,700.78

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Solution

The fourth proportional to 454,583.75, 683,370.47 and 421,700.78 is: 633,937.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,583.75 : 683,370.47 = 421,700.78 : x
  2. Step 2: Convert to fraction form
    454,583.75/683,370.47 = 421,700.78/x
  3. Step 3: Cross multiply
    454,583.75x = 683,370.47 × 421,700.78
  4. Step 4: Simplify right side
    454,583.75x = 288,177,862,990.65
  5. Step 5: Solve for x
    x = 288,177,862,990.65/454,583.75
  6. Step 6: Final answer
    x = 633,937.90

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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.