Home / 1,327,742,109.69-1,991,585,815.18-442,491,756.68

Finding the Fourth Proportional to 1,327,742,109.69, 1,991,585,815.18 and 442,491,756.68

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Solution

The fourth proportional to 1,327,742,109.69, 1,991,585,815.18 and 442,491,756.68 is: 663,728,520.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327,742,109.69 : 1,991,585,815.18 = 442,491,756.68 : x
  2. Step 2: Convert to fraction form
    1,327,742,109.69/1,991,585,815.18 = 442,491,756.68/x
  3. Step 3: Cross multiply
    1,327,742,109.69x = 1,991,585,815.18 × 442,491,756.68
  4. Step 4: Simplify right side
    1,327,742,109.69x = 881,260,305,937,968,000
  5. Step 5: Solve for x
    x = 881,260,305,937,968,000/1,327,742,109.69
  6. Step 6: Final answer
    x = 663,728,520.40

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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.