Home / 1,218,633,555.78-1,826,674,529.56-509,988,135.56

Finding the Fourth Proportional to 1,218,633,555.78, 1,826,674,529.56 and 509,988,135.56

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Solution

The fourth proportional to 1,218,633,555.78, 1,826,674,529.56 and 509,988,135.56 is: 764,448,289.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,633,555.78 : 1,826,674,529.56 = 509,988,135.56 : x
  2. Step 2: Convert to fraction form
    1,218,633,555.78/1,826,674,529.56 = 509,988,135.56/x
  3. Step 3: Cross multiply
    1,218,633,555.78x = 1,826,674,529.56 × 509,988,135.56
  4. Step 4: Simplify right side
    1,218,633,555.78x = 931,582,337,605,244,544
  5. Step 5: Solve for x
    x = 931,582,337,605,244,544/1,218,633,555.78
  6. Step 6: Final answer
    x = 764,448,289.80

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Double scale
Find fourth proportional to 1,218,633,556.78, 1,826,674,531.06 and 509,988,136.56
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1.5x scale

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.