Home / 812,592,945.80-1,218,889,418.70-605,664,254.60

Finding the Fourth Proportional to 812,592,945.80, 1,218,889,418.70 and 605,664,254.60

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Solution

The fourth proportional to 812,592,945.80, 1,218,889,418.70 and 605,664,254.60 is: 908,496,381.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,592,945.80 : 1,218,889,418.70 = 605,664,254.60 : x
  2. Step 2: Convert to fraction form
    812,592,945.80/1,218,889,418.70 = 605,664,254.60/x
  3. Step 3: Cross multiply
    812,592,945.80x = 1,218,889,418.70 × 605,664,254.60
  4. Step 4: Simplify right side
    812,592,945.80x = 738,237,751,216,762,880
  5. Step 5: Solve for x
    x = 738,237,751,216,762,880/812,592,945.80
  6. Step 6: Final answer
    x = 908,496,381.90

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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.