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Finding the Fourth Proportional to 886,903.20, 1,330,063.20 and 325,864.80

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Solution

The fourth proportional to 886,903.20, 1,330,063.20 and 325,864.80 is: 488,690.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,903.20 : 1,330,063.20 = 325,864.80 : x
  2. Step 2: Convert to fraction form
    886,903.20/1,330,063.20 = 325,864.80/x
  3. Step 3: Cross multiply
    886,903.20x = 1,330,063.20 × 325,864.80
  4. Step 4: Simplify right side
    886,903.20x = 433,420,778,655.36
  5. Step 5: Solve for x
    x = 433,420,778,655.36/886,903.20
  6. Step 6: Final answer
    x = 488,690.06

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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.