Home / 1,296,434,427.76-1,789,079,597.60-709,723,563.76

Finding the Fourth Proportional to 1,296,434,427.76, 1,789,079,597.60 and 709,723,563.76

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Solution

The fourth proportional to 1,296,434,427.76, 1,789,079,597.60 and 709,723,563.76 is: 979,418,565.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,434,427.76 : 1,789,079,597.60 = 709,723,563.76 : x
  2. Step 2: Convert to fraction form
    1,296,434,427.76/1,789,079,597.60 = 709,723,563.76/x
  3. Step 3: Cross multiply
    1,296,434,427.76x = 1,789,079,597.60 × 709,723,563.76
  4. Step 4: Simplify right side
    1,296,434,427.76x = 1,269,751,947,858,978,560
  5. Step 5: Solve for x
    x = 1,269,751,947,858,978,560/1,296,434,427.76
  6. Step 6: Final answer
    x = 979,418,565.78

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Double scale
Find fourth proportional to 1,296,434,428.76, 1,789,079,598.98 and 709,723,564.76
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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.