Home / 538,620.09-743,438.79-318,050.67

Finding the Fourth Proportional to 538,620.09, 743,438.79 and 318,050.67

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Solution

The fourth proportional to 538,620.09, 743,438.79 and 318,050.67 is: 438,994.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,620.09 : 743,438.79 = 318,050.67 : x
  2. Step 2: Convert to fraction form
    538,620.09/743,438.79 = 318,050.67/x
  3. Step 3: Cross multiply
    538,620.09x = 743,438.79 × 318,050.67
  4. Step 4: Simplify right side
    538,620.09x = 236,451,205,263.49
  5. Step 5: Solve for x
    x = 236,451,205,263.49/538,620.09
  6. Step 6: Final answer
    x = 438,994.40

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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.