Home / 780,135.40-1,170,203.10-444,212.20

Finding the Fourth Proportional to 780,135.40, 1,170,203.10 and 444,212.20

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Solution

The fourth proportional to 780,135.40, 1,170,203.10 and 444,212.20 is: 666,318.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,135.40 : 1,170,203.10 = 444,212.20 : x
  2. Step 2: Convert to fraction form
    780,135.40/1,170,203.10 = 444,212.20/x
  3. Step 3: Cross multiply
    780,135.40x = 1,170,203.10 × 444,212.20
  4. Step 4: Simplify right side
    780,135.40x = 519,818,493,497.82
  5. Step 5: Solve for x
    x = 519,818,493,497.82/780,135.40
  6. Step 6: Final answer
    x = 666,318.30

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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.