Home / 783,977.75-1,081,785.69-439,800.47

Finding the Fourth Proportional to 783,977.75, 1,081,785.69 and 439,800.47

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Solution

The fourth proportional to 783,977.75, 1,081,785.69 and 439,800.47 is: 606,866.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,977.75 : 1,081,785.69 = 439,800.47 : x
  2. Step 2: Convert to fraction form
    783,977.75/1,081,785.69 = 439,800.47/x
  3. Step 3: Cross multiply
    783,977.75x = 1,081,785.69 × 439,800.47
  4. Step 4: Simplify right side
    783,977.75x = 475,769,853,549.04
  5. Step 5: Solve for x
    x = 475,769,853,549.04/783,977.75
  6. Step 6: Final answer
    x = 606,866.53

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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.