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Finding the Fourth Proportional to 640,551.90, 883,946.07 and 354,064.62

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Solution

The fourth proportional to 640,551.90, 883,946.07 and 354,064.62 is: 488,600.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,551.90 : 883,946.07 = 354,064.62 : x
  2. Step 2: Convert to fraction form
    640,551.90/883,946.07 = 354,064.62/x
  3. Step 3: Cross multiply
    640,551.90x = 883,946.07 × 354,064.62
  4. Step 4: Simplify right side
    640,551.90x = 312,974,029,375.04
  5. Step 5: Solve for x
    x = 312,974,029,375.04/640,551.90
  6. Step 6: Final answer
    x = 488,600.58

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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.