Home / 428,810.42-591,744.65-235,215.38

Finding the Fourth Proportional to 428,810.42, 591,744.65 and 235,215.38

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Solution

The fourth proportional to 428,810.42, 591,744.65 and 235,215.38 is: 324,589.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,810.42 : 591,744.65 = 235,215.38 : x
  2. Step 2: Convert to fraction form
    428,810.42/591,744.65 = 235,215.38/x
  3. Step 3: Cross multiply
    428,810.42x = 591,744.65 × 235,215.38
  4. Step 4: Simplify right side
    428,810.42x = 139,187,438,577.92
  5. Step 5: Solve for x
    x = 139,187,438,577.92/428,810.42
  6. Step 6: Final answer
    x = 324,589.69

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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.