Home / 764,563,911.30-1,147,293,764.55-279,938,708.10

Finding the Fourth Proportional to 764,563,911.30, 1,147,293,764.55 and 279,938,708.10

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Solution

The fourth proportional to 764,563,911.30, 1,147,293,764.55 and 279,938,708.10 is: 420,072,056.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,563,911.30 : 1,147,293,764.55 = 279,938,708.10 : x
  2. Step 2: Convert to fraction form
    764,563,911.30/1,147,293,764.55 = 279,938,708.10/x
  3. Step 3: Cross multiply
    764,563,911.30x = 1,147,293,764.55 × 279,938,708.10
  4. Step 4: Simplify right side
    764,563,911.30x = 321,171,934,259,312,576
  5. Step 5: Solve for x
    x = 321,171,934,259,312,576/764,563,911.30
  6. Step 6: Final answer
    x = 420,072,056.13

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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.