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Finding the Fourth Proportional to 886,996.80, 1,330,592.40 and 859,003.20

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Solution

The fourth proportional to 886,996.80, 1,330,592.40 and 859,003.20 is: 1,288,598.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,996.80 : 1,330,592.40 = 859,003.20 : x
  2. Step 2: Convert to fraction form
    886,996.80/1,330,592.40 = 859,003.20/x
  3. Step 3: Cross multiply
    886,996.80x = 1,330,592.40 × 859,003.20
  4. Step 4: Simplify right side
    886,996.80x = 1,142,983,129,495.68
  5. Step 5: Solve for x
    x = 1,142,983,129,495.68/886,996.80
  6. Step 6: Final answer
    x = 1,288,598.93

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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.