Home / 783,667.80-1,081,579.79-477,921.56

Finding the Fourth Proportional to 783,667.80, 1,081,579.79 and 477,921.56

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Solution

The fourth proportional to 783,667.80, 1,081,579.79 and 477,921.56 is: 659,603.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,667.80 : 1,081,579.79 = 477,921.56 : x
  2. Step 2: Convert to fraction form
    783,667.80/1,081,579.79 = 477,921.56/x
  3. Step 3: Cross multiply
    783,667.80x = 1,081,579.79 × 477,921.56
  4. Step 4: Simplify right side
    783,667.80x = 516,910,300,501.27
  5. Step 5: Solve for x
    x = 516,910,300,501.27/783,667.80
  6. Step 6: Final answer
    x = 659,603.85

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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.