Home / 703,455.20-1,055,636.40-388,138.40

Finding the Fourth Proportional to 703,455.20, 1,055,636.40 and 388,138.40

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Solution

The fourth proportional to 703,455.20, 1,055,636.40 and 388,138.40 is: 582,457.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,455.20 : 1,055,636.40 = 388,138.40 : x
  2. Step 2: Convert to fraction form
    703,455.20/1,055,636.40 = 388,138.40/x
  3. Step 3: Cross multiply
    703,455.20x = 1,055,636.40 × 388,138.40
  4. Step 4: Simplify right side
    703,455.20x = 409,733,023,277.76
  5. Step 5: Solve for x
    x = 409,733,023,277.76/703,455.20
  6. Step 6: Final answer
    x = 582,457.88

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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.