Home / 529,826.81-731,138.74-300,399.53

Finding the Fourth Proportional to 529,826.81, 731,138.74 and 300,399.53

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Solution

The fourth proportional to 529,826.81, 731,138.74 and 300,399.53 is: 414,538.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,826.81 : 731,138.74 = 300,399.53 : x
  2. Step 2: Convert to fraction form
    529,826.81/731,138.74 = 300,399.53/x
  3. Step 3: Cross multiply
    529,826.81x = 731,138.74 × 300,399.53
  4. Step 4: Simplify right side
    529,826.81x = 219,633,733,860.79
  5. Step 5: Solve for x
    x = 219,633,733,860.79/529,826.81
  6. Step 6: Final answer
    x = 414,538.73

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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.