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Finding the Fourth Proportional to 632,498.40, 872,810.64 and 345,961.44

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Solution

The fourth proportional to 632,498.40, 872,810.64 and 345,961.44 is: 477,406.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,498.40 : 872,810.64 = 345,961.44 : x
  2. Step 2: Convert to fraction form
    632,498.40/872,810.64 = 345,961.44/x
  3. Step 3: Cross multiply
    632,498.40x = 872,810.64 × 345,961.44
  4. Step 4: Simplify right side
    632,498.40x = 301,958,825,861.72
  5. Step 5: Solve for x
    x = 301,958,825,861.72/632,498.40
  6. Step 6: Final answer
    x = 477,406.47

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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.