Home / 705,412.38-1,057,847.78-300,347.78

Finding the Fourth Proportional to 705,412.38, 1,057,847.78 and 300,347.78

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Solution

The fourth proportional to 705,412.38, 1,057,847.78 and 300,347.78 is: 450,406.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,412.38 : 1,057,847.78 = 300,347.78 : x
  2. Step 2: Convert to fraction form
    705,412.38/1,057,847.78 = 300,347.78/x
  3. Step 3: Cross multiply
    705,412.38x = 1,057,847.78 × 300,347.78
  4. Step 4: Simplify right side
    705,412.38x = 317,722,232,300.93
  5. Step 5: Solve for x
    x = 317,722,232,300.93/705,412.38
  6. Step 6: Final answer
    x = 450,406.37

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1.5x scale

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.