Home / 764,335.57-1,054,796.49-420,186.00

Finding the Fourth Proportional to 764,335.57, 1,054,796.49 and 420,186.00

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Solution

The fourth proportional to 764,335.57, 1,054,796.49 and 420,186.00 is: 579,864.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,335.57 : 1,054,796.49 = 420,186.00 : x
  2. Step 2: Convert to fraction form
    764,335.57/1,054,796.49 = 420,186.00/x
  3. Step 3: Cross multiply
    764,335.57x = 1,054,796.49 × 420,186.00
  4. Step 4: Simplify right side
    764,335.57x = 443,210,716,757.25
  5. Step 5: Solve for x
    x = 443,210,716,757.25/764,335.57
  6. Step 6: Final answer
    x = 579,864.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.