Home / 505,393,039.70-697,478,485.20-279,327,160.15

Finding the Fourth Proportional to 505,393,039.70, 697,478,485.20 and 279,327,160.15

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Solution

The fourth proportional to 505,393,039.70, 697,478,485.20 and 279,327,160.15 is: 385,491,427.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,393,039.70 : 697,478,485.20 = 279,327,160.15 : x
  2. Step 2: Convert to fraction form
    505,393,039.70/697,478,485.20 = 279,327,160.15/x
  3. Step 3: Cross multiply
    505,393,039.70x = 697,478,485.20 × 279,327,160.15
  4. Step 4: Simplify right side
    505,393,039.70x = 194,824,684,536,639,808
  5. Step 5: Solve for x
    x = 194,824,684,536,639,808/505,393,039.70
  6. Step 6: Final answer
    x = 385,491,427.92

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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.