Home / 509,625,311.40-764,437,967.10-279,505,477.80

Finding the Fourth Proportional to 509,625,311.40, 764,437,967.10 and 279,505,477.80

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Solution

The fourth proportional to 509,625,311.40, 764,437,967.10 and 279,505,477.80 is: 419,258,216.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,625,311.40 : 764,437,967.10 = 279,505,477.80 : x
  2. Step 2: Convert to fraction form
    509,625,311.40/764,437,967.10 = 279,505,477.80/x
  3. Step 3: Cross multiply
    509,625,311.40x = 764,437,967.10 × 279,505,477.80
  4. Step 4: Simplify right side
    509,625,311.40x = 213,664,599,242,746,208
  5. Step 5: Solve for x
    x = 213,664,599,242,746,208/509,625,311.40
  6. Step 6: Final answer
    x = 419,258,216.70

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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.