Home / 1,320,148,853.56-1,821,819,918.96-725,433,491.80

Finding the Fourth Proportional to 1,320,148,853.56, 1,821,819,918.96 and 725,433,491.80

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Solution

The fourth proportional to 1,320,148,853.56, 1,821,819,918.96 and 725,433,491.80 is: 1,001,106,187.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,148,853.56 : 1,821,819,918.96 = 725,433,491.80 : x
  2. Step 2: Convert to fraction form
    1,320,148,853.56/1,821,819,918.96 = 725,433,491.80/x
  3. Step 3: Cross multiply
    1,320,148,853.56x = 1,821,819,918.96 × 725,433,491.80
  4. Step 4: Simplify right side
    1,320,148,853.56x = 1,321,609,185,241,945,856
  5. Step 5: Solve for x
    x = 1,321,609,185,241,945,856/1,320,148,853.56
  6. Step 6: Final answer
    x = 1,001,106,187.14

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Double scale
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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.