Home / 764,983.55-1,055,671.47-420,812.07

Finding the Fourth Proportional to 764,983.55, 1,055,671.47 and 420,812.07

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Solution

The fourth proportional to 764,983.55, 1,055,671.47 and 420,812.07 is: 580,717.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,983.55 : 1,055,671.47 = 420,812.07 : x
  2. Step 2: Convert to fraction form
    764,983.55/1,055,671.47 = 420,812.07/x
  3. Step 3: Cross multiply
    764,983.55x = 1,055,671.47 × 420,812.07
  4. Step 4: Simplify right side
    764,983.55x = 444,239,296,530.64
  5. Step 5: Solve for x
    x = 444,239,296,530.64/764,983.55
  6. Step 6: Final answer
    x = 580,717.45

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1.5x scale

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.