Home / 781,087.05-1,171,619.64-307,776.51

Finding the Fourth Proportional to 781,087.05, 1,171,619.64 and 307,776.51

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Solution

The fourth proportional to 781,087.05, 1,171,619.64 and 307,776.51 is: 461,660.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,087.05 : 1,171,619.64 = 307,776.51 : x
  2. Step 2: Convert to fraction form
    781,087.05/1,171,619.64 = 307,776.51/x
  3. Step 3: Cross multiply
    781,087.05x = 1,171,619.64 × 307,776.51
  4. Step 4: Simplify right side
    781,087.05x = 360,597,003,846.66
  5. Step 5: Solve for x
    x = 360,597,003,846.66/781,087.05
  6. Step 6: Final answer
    x = 461,660.46

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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.