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Finding the Fourth Proportional to 620,908.80, 930,584 and 265,504.96

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Solution

The fourth proportional to 620,908.80, 930,584 and 265,504.96 is: 397,924.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,908.80 : 930,584 = 265,504.96 : x
  2. Step 2: Convert to fraction form
    620,908.80/930,584 = 265,504.96/x
  3. Step 3: Cross multiply
    620,908.80x = 930,584 × 265,504.96
  4. Step 4: Simplify right side
    620,908.80x = 247,074,667,696.64
  5. Step 5: Solve for x
    x = 247,074,667,696.64/620,908.80
  6. Step 6: Final answer
    x = 397,924.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.