Home / 457,741.28-631,846.44-312,443.06

Finding the Fourth Proportional to 457,741.28, 631,846.44 and 312,443.06

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Solution

The fourth proportional to 457,741.28, 631,846.44 and 312,443.06 is: 431,283.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,741.28 : 631,846.44 = 312,443.06 : x
  2. Step 2: Convert to fraction form
    457,741.28/631,846.44 = 312,443.06/x
  3. Step 3: Cross multiply
    457,741.28x = 631,846.44 × 312,443.06
  4. Step 4: Simplify right side
    457,741.28x = 197,416,035,163.71
  5. Step 5: Solve for x
    x = 197,416,035,163.71/457,741.28
  6. Step 6: Final answer
    x = 431,283.01

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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.