Home / 812,533.77-1,218,907.44-279,911.79

Finding the Fourth Proportional to 812,533.77, 1,218,907.44 and 279,911.79

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Solution

The fourth proportional to 812,533.77, 1,218,907.44 and 279,911.79 is: 419,904.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,533.77 : 1,218,907.44 = 279,911.79 : x
  2. Step 2: Convert to fraction form
    812,533.77/1,218,907.44 = 279,911.79/x
  3. Step 3: Cross multiply
    812,533.77x = 1,218,907.44 × 279,911.79
  4. Step 4: Simplify right side
    812,533.77x = 341,186,563,374.72
  5. Step 5: Solve for x
    x = 341,186,563,374.72/812,533.77
  6. Step 6: Final answer
    x = 419,904.47

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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.