Home / 764,977.36-1,055,688.96-420,822.40

Finding the Fourth Proportional to 764,977.36, 1,055,688.96 and 420,822.40

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Solution

The fourth proportional to 764,977.36, 1,055,688.96 and 420,822.40 is: 580,746.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,977.36 : 1,055,688.96 = 420,822.40 : x
  2. Step 2: Convert to fraction form
    764,977.36/1,055,688.96 = 420,822.40/x
  3. Step 3: Cross multiply
    764,977.36x = 1,055,688.96 × 420,822.40
  4. Step 4: Simplify right side
    764,977.36x = 444,257,561,800.70
  5. Step 5: Solve for x
    x = 444,257,561,800.70/764,977.36
  6. Step 6: Final answer
    x = 580,746.03

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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.