Home / 685,623.94-946,318.49-456,190.89

Finding the Fourth Proportional to 685,623.94, 946,318.49 and 456,190.89

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Solution

The fourth proportional to 685,623.94, 946,318.49 and 456,190.89 is: 629,648.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,623.94 : 946,318.49 = 456,190.89 : x
  2. Step 2: Convert to fraction form
    685,623.94/946,318.49 = 456,190.89/x
  3. Step 3: Cross multiply
    685,623.94x = 946,318.49 × 456,190.89
  4. Step 4: Simplify right side
    685,623.94x = 431,701,872,623.70
  5. Step 5: Solve for x
    x = 431,701,872,623.70/685,623.94
  6. Step 6: Final answer
    x = 629,648.19

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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.