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Finding the Fourth Proportional to 632,401.88, 872,696.04 and 345,915.80

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Solution

The fourth proportional to 632,401.88, 872,696.04 and 345,915.80 is: 477,353.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,401.88 : 872,696.04 = 345,915.80 : x
  2. Step 2: Convert to fraction form
    632,401.88/872,696.04 = 345,915.80/x
  3. Step 3: Cross multiply
    632,401.88x = 872,696.04 × 345,915.80
  4. Step 4: Simplify right side
    632,401.88x = 301,879,348,833.43
  5. Step 5: Solve for x
    x = 301,879,348,833.43/632,401.88
  6. Step 6: Final answer
    x = 477,353.65

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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.