Home / 407,895,042.87-612,023,421.92-213,760,301.67

Finding the Fourth Proportional to 407,895,042.87, 612,023,421.92 and 213,760,301.67

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Solution

The fourth proportional to 407,895,042.87, 612,023,421.92 and 213,760,301.67 is: 320,735,232.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,895,042.87 : 612,023,421.92 = 213,760,301.67 : x
  2. Step 2: Convert to fraction form
    407,895,042.87/612,023,421.92 = 213,760,301.67/x
  3. Step 3: Cross multiply
    407,895,042.87x = 612,023,421.92 × 213,760,301.67
  4. Step 4: Simplify right side
    407,895,042.87x = 130,826,311,297,656,080
  5. Step 5: Solve for x
    x = 130,826,311,297,656,080/407,895,042.87
  6. Step 6: Final answer
    x = 320,735,232.22

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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.