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Finding the Fourth Proportional to 489,120.80, 732,806.40 and 301,913.60

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Solution

The fourth proportional to 489,120.80, 732,806.40 and 301,913.60 is: 452,330.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,120.80 : 732,806.40 = 301,913.60 : x
  2. Step 2: Convert to fraction form
    489,120.80/732,806.40 = 301,913.60/x
  3. Step 3: Cross multiply
    489,120.80x = 732,806.40 × 301,913.60
  4. Step 4: Simplify right side
    489,120.80x = 221,244,218,327.04
  5. Step 5: Solve for x
    x = 221,244,218,327.04/489,120.80
  6. Step 6: Final answer
    x = 452,330.42

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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.