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Finding the Fourth Proportional to 472,448.23, 651,991.64 and 288,716.54

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Solution

The fourth proportional to 472,448.23, 651,991.64 and 288,716.54 is: 398,436.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,448.23 : 651,991.64 = 288,716.54 : x
  2. Step 2: Convert to fraction form
    472,448.23/651,991.64 = 288,716.54/x
  3. Step 3: Cross multiply
    472,448.23x = 651,991.64 × 288,716.54
  4. Step 4: Simplify right side
    472,448.23x = 188,240,765,706.19
  5. Step 5: Solve for x
    x = 188,240,765,706.19/472,448.23
  6. Step 6: Final answer
    x = 398,436.81

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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.