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Finding the Fourth Proportional to 655,999.19, 905,283.39 and 365,629.47

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Solution

The fourth proportional to 655,999.19, 905,283.39 and 365,629.47 is: 504,571.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,999.19 : 905,283.39 = 365,629.47 : x
  2. Step 2: Convert to fraction form
    655,999.19/905,283.39 = 365,629.47/x
  3. Step 3: Cross multiply
    655,999.19x = 905,283.39 × 365,629.47
  4. Step 4: Simplify right side
    655,999.19x = 330,998,286,085.50
  5. Step 5: Solve for x
    x = 330,998,286,085.50/655,999.19
  6. Step 6: Final answer
    x = 504,571.18

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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.