Home / 877,550.35-1,211,139.75-505,005.61

Finding the Fourth Proportional to 877,550.35, 1,211,139.75 and 505,005.61

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Solution

The fourth proportional to 877,550.35, 1,211,139.75 and 505,005.61 is: 696,976.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,550.35 : 1,211,139.75 = 505,005.61 : x
  2. Step 2: Convert to fraction form
    877,550.35/1,211,139.75 = 505,005.61/x
  3. Step 3: Cross multiply
    877,550.35x = 1,211,139.75 × 505,005.61
  4. Step 4: Simplify right side
    877,550.35x = 611,632,368,244.00
  5. Step 5: Solve for x
    x = 611,632,368,244.00/877,550.35
  6. Step 6: Final answer
    x = 696,976.95

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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.