Home / 764,138.64-1,145,907.72-258,560.40

Finding the Fourth Proportional to 764,138.64, 1,145,907.72 and 258,560.40

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Solution

The fourth proportional to 764,138.64, 1,145,907.72 and 258,560.40 is: 387,739.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,138.64 : 1,145,907.72 = 258,560.40 : x
  2. Step 2: Convert to fraction form
    764,138.64/1,145,907.72 = 258,560.40/x
  3. Step 3: Cross multiply
    764,138.64x = 1,145,907.72 × 258,560.40
  4. Step 4: Simplify right side
    764,138.64x = 296,286,358,446.29
  5. Step 5: Solve for x
    x = 296,286,358,446.29/764,138.64
  6. Step 6: Final answer
    x = 387,739.01

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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.