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Finding the Fourth Proportional to 640,846.08, 884,377.44 and 354,360.96

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Solution

The fourth proportional to 640,846.08, 884,377.44 and 354,360.96 is: 489,023.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,846.08 : 884,377.44 = 354,360.96 : x
  2. Step 2: Convert to fraction form
    640,846.08/884,377.44 = 354,360.96/x
  3. Step 3: Cross multiply
    640,846.08x = 884,377.44 × 354,360.96
  4. Step 4: Simplify right side
    640,846.08x = 313,388,838,640.74
  5. Step 5: Solve for x
    x = 313,388,838,640.74/640,846.08
  6. Step 6: Final answer
    x = 489,023.57

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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.