Home / 579,470.45-869,444.82-312,917.09

Finding the Fourth Proportional to 579,470.45, 869,444.82 and 312,917.09

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Solution

The fourth proportional to 579,470.45, 869,444.82 and 312,917.09 is: 469,504.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,470.45 : 869,444.82 = 312,917.09 : x
  2. Step 2: Convert to fraction form
    579,470.45/869,444.82 = 312,917.09/x
  3. Step 3: Cross multiply
    579,470.45x = 869,444.82 × 312,917.09
  4. Step 4: Simplify right side
    579,470.45x = 272,064,138,642.75
  5. Step 5: Solve for x
    x = 272,064,138,642.75/579,470.45
  6. Step 6: Final answer
    x = 469,504.77

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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.