Home / 579,546.42-869,139.60-279,840.66

Finding the Fourth Proportional to 579,546.42, 869,139.60 and 279,840.66

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Solution

The fourth proportional to 579,546.42, 869,139.60 and 279,840.66 is: 419,674.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,546.42 : 869,139.60 = 279,840.66 : x
  2. Step 2: Convert to fraction form
    579,546.42/869,139.60 = 279,840.66/x
  3. Step 3: Cross multiply
    579,546.42x = 869,139.60 × 279,840.66
  4. Step 4: Simplify right side
    579,546.42x = 243,220,599,296.14
  5. Step 5: Solve for x
    x = 243,220,599,296.14/579,546.42
  6. Step 6: Final answer
    x = 419,674.06

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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.