Home / 855,557.94-1,180,759.77-640,321.50

Finding the Fourth Proportional to 855,557.94, 1,180,759.77 and 640,321.50

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Solution

The fourth proportional to 855,557.94, 1,180,759.77 and 640,321.50 is: 883,710.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,557.94 : 1,180,759.77 = 640,321.50 : x
  2. Step 2: Convert to fraction form
    855,557.94/1,180,759.77 = 640,321.50/x
  3. Step 3: Cross multiply
    855,557.94x = 1,180,759.77 × 640,321.50
  4. Step 4: Simplify right side
    855,557.94x = 756,065,867,066.06
  5. Step 5: Solve for x
    x = 756,065,867,066.06/855,557.94
  6. Step 6: Final answer
    x = 883,710.89

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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.