Home / 705,019.92-1,057,676.40-320,585.64

Finding the Fourth Proportional to 705,019.92, 1,057,676.40 and 320,585.64

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Solution

The fourth proportional to 705,019.92, 1,057,676.40 and 320,585.64 is: 480,945.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,019.92 : 1,057,676.40 = 320,585.64 : x
  2. Step 2: Convert to fraction form
    705,019.92/1,057,676.40 = 320,585.64/x
  3. Step 3: Cross multiply
    705,019.92x = 1,057,676.40 × 320,585.64
  4. Step 4: Simplify right side
    705,019.92x = 339,075,865,606.90
  5. Step 5: Solve for x
    x = 339,075,865,606.90/705,019.92
  6. Step 6: Final answer
    x = 480,945.09

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.