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Finding the Fourth Proportional to 641,244.50, 884,840.97 and 354,725.78

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Solution

The fourth proportional to 641,244.50, 884,840.97 and 354,725.78 is: 489,479.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,244.50 : 884,840.97 = 354,725.78 : x
  2. Step 2: Convert to fraction form
    641,244.50/884,840.97 = 354,725.78/x
  3. Step 3: Cross multiply
    641,244.50x = 884,840.97 × 354,725.78
  4. Step 4: Simplify right side
    641,244.50x = 313,875,903,259.21
  5. Step 5: Solve for x
    x = 313,875,903,259.21/641,244.50
  6. Step 6: Final answer
    x = 489,479.29

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1.5x scale

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.