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Finding the Fourth Proportional to 632,403.88, 872,698.80 and 345,917.80

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Solution

The fourth proportional to 632,403.88, 872,698.80 and 345,917.80 is: 477,356.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,403.88 : 872,698.80 = 345,917.80 : x
  2. Step 2: Convert to fraction form
    632,403.88/872,698.80 = 345,917.80/x
  3. Step 3: Cross multiply
    632,403.88x = 872,698.80 × 345,917.80
  4. Step 4: Simplify right side
    632,403.88x = 301,882,048,958.64
  5. Step 5: Solve for x
    x = 301,882,048,958.64/632,403.88
  6. Step 6: Final answer
    x = 477,356.41

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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.