Home / 855,554.94-1,180,755.63-640,318.50

Finding the Fourth Proportional to 855,554.94, 1,180,755.63 and 640,318.50

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Solution

The fourth proportional to 855,554.94, 1,180,755.63 and 640,318.50 is: 883,706.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,554.94 : 1,180,755.63 = 640,318.50 : x
  2. Step 2: Convert to fraction form
    855,554.94/1,180,755.63 = 640,318.50/x
  3. Step 3: Cross multiply
    855,554.94x = 1,180,755.63 × 640,318.50
  4. Step 4: Simplify right side
    855,554.94x = 756,059,673,868.16
  5. Step 5: Solve for x
    x = 756,059,673,868.16/855,554.94
  6. Step 6: Final answer
    x = 883,706.75

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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.