Home / 517,980,821.40-775,578,940.65-394,571,253.15

Finding the Fourth Proportional to 517,980,821.40, 775,578,940.65 and 394,571,253.15

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Solution

The fourth proportional to 517,980,821.40, 775,578,940.65 and 394,571,253.15 is: 590,796,303.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,980,821.40 : 775,578,940.65 = 394,571,253.15 : x
  2. Step 2: Convert to fraction form
    517,980,821.40/775,578,940.65 = 394,571,253.15/x
  3. Step 3: Cross multiply
    517,980,821.40x = 775,578,940.65 × 394,571,253.15
  4. Step 4: Simplify right side
    517,980,821.40x = 306,021,154,529,019,968
  5. Step 5: Solve for x
    x = 306,021,154,529,019,968/517,980,821.40
  6. Step 6: Final answer
    x = 590,796,303.43

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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.