Home / 645,923.77-890,450.82-454,342.57

Finding the Fourth Proportional to 645,923.77, 890,450.82 and 454,342.57

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Solution

The fourth proportional to 645,923.77, 890,450.82 and 454,342.57 is: 626,342.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,923.77 : 890,450.82 = 454,342.57 : x
  2. Step 2: Convert to fraction form
    645,923.77/890,450.82 = 454,342.57/x
  3. Step 3: Cross multiply
    645,923.77x = 890,450.82 × 454,342.57
  4. Step 4: Simplify right side
    645,923.77x = 404,569,711,791.28
  5. Step 5: Solve for x
    x = 404,569,711,791.28/645,923.77
  6. Step 6: Final answer
    x = 626,342.82

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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.