Home / 705,111,191.20-1,057,666,786.80-378,593,840.80

Finding the Fourth Proportional to 705,111,191.20, 1,057,666,786.80 and 378,593,840.80

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Solution

The fourth proportional to 705,111,191.20, 1,057,666,786.80 and 378,593,840.80 is: 567,890,761.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,111,191.20 : 1,057,666,786.80 = 378,593,840.80 : x
  2. Step 2: Convert to fraction form
    705,111,191.20/1,057,666,786.80 = 378,593,840.80/x
  3. Step 3: Cross multiply
    705,111,191.20x = 1,057,666,786.80 × 378,593,840.80
  4. Step 4: Simplify right side
    705,111,191.20x = 400,426,131,101,206,720
  5. Step 5: Solve for x
    x = 400,426,131,101,206,720/705,111,191.20
  6. Step 6: Final answer
    x = 567,890,761.20

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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.