Home / 667,340,143.20-1,001,010,214.80-380,685,679.20

Finding the Fourth Proportional to 667,340,143.20, 1,001,010,214.80 and 380,685,679.20

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Solution

The fourth proportional to 667,340,143.20, 1,001,010,214.80 and 380,685,679.20 is: 571,028,518.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,340,143.20 : 1,001,010,214.80 = 380,685,679.20 : x
  2. Step 2: Convert to fraction form
    667,340,143.20/1,001,010,214.80 = 380,685,679.20/x
  3. Step 3: Cross multiply
    667,340,143.20x = 1,001,010,214.80 × 380,685,679.20
  4. Step 4: Simplify right side
    667,340,143.20x = 381,070,253,507,275,840
  5. Step 5: Solve for x
    x = 381,070,253,507,275,840/667,340,143.20
  6. Step 6: Final answer
    x = 571,028,518.80

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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.