Home / 1,259,776.80-1,889,665.20-512,359.20

Finding the Fourth Proportional to 1,259,776.80, 1,889,665.20 and 512,359.20

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Solution

The fourth proportional to 1,259,776.80, 1,889,665.20 and 512,359.20 is: 768,538.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,776.80 : 1,889,665.20 = 512,359.20 : x
  2. Step 2: Convert to fraction form
    1,259,776.80/1,889,665.20 = 512,359.20/x
  3. Step 3: Cross multiply
    1,259,776.80x = 1,889,665.20 × 512,359.20
  4. Step 4: Simplify right side
    1,259,776.80x = 968,187,350,139.84
  5. Step 5: Solve for x
    x = 968,187,350,139.84/1,259,776.80
  6. Step 6: Final answer
    x = 768,538.80

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Similar ratio
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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.