Home / 939,028,911.87-1,295,809,313.27-521,314,307.85

Finding the Fourth Proportional to 939,028,911.87, 1,295,809,313.27 and 521,314,307.85

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Solution

The fourth proportional to 939,028,911.87, 1,295,809,313.27 and 521,314,307.85 is: 719,385,661.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,028,911.87 : 1,295,809,313.27 = 521,314,307.85 : x
  2. Step 2: Convert to fraction form
    939,028,911.87/1,295,809,313.27 = 521,314,307.85/x
  3. Step 3: Cross multiply
    939,028,911.87x = 1,295,809,313.27 × 521,314,307.85
  4. Step 4: Simplify right side
    939,028,911.87x = 675,523,935,250,327,424
  5. Step 5: Solve for x
    x = 675,523,935,250,327,424/939,028,911.87
  6. Step 6: Final answer
    x = 719,385,661.84

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1.5x scale

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.