Home / 1,190,405.20-1,785,243.30-391,502.20

Finding the Fourth Proportional to 1,190,405.20, 1,785,243.30 and 391,502.20

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Solution

The fourth proportional to 1,190,405.20, 1,785,243.30 and 391,502.20 is: 587,133.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,405.20 : 1,785,243.30 = 391,502.20 : x
  2. Step 2: Convert to fraction form
    1,190,405.20/1,785,243.30 = 391,502.20/x
  3. Step 3: Cross multiply
    1,190,405.20x = 1,785,243.30 × 391,502.20
  4. Step 4: Simplify right side
    1,190,405.20x = 698,926,679,485.26
  5. Step 5: Solve for x
    x = 698,926,679,485.26/1,190,405.20
  6. Step 6: Final answer
    x = 587,133.42

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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.