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Finding the Fourth Proportional to 528,120, 728,806.68 and 301,764.96

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Solution

The fourth proportional to 528,120, 728,806.68 and 301,764.96 is: 416,436.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,120 : 728,806.68 = 301,764.96 : x
  2. Step 2: Convert to fraction form
    528,120/728,806.68 = 301,764.96/x
  3. Step 3: Cross multiply
    528,120x = 728,806.68 × 301,764.96
  4. Step 4: Simplify right side
    528,120x = 219,928,318,637.93
  5. Step 5: Solve for x
    x = 219,928,318,637.93/528,120
  6. Step 6: Final answer
    x = 416,436.26

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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.