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Finding the Fourth Proportional to 863,409.60, 1,295,114.40 and 846,820.80

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Solution

The fourth proportional to 863,409.60, 1,295,114.40 and 846,820.80 is: 1,270,231.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,409.60 : 1,295,114.40 = 846,820.80 : x
  2. Step 2: Convert to fraction form
    863,409.60/1,295,114.40 = 846,820.80/x
  3. Step 3: Cross multiply
    863,409.60x = 1,295,114.40 × 846,820.80
  4. Step 4: Simplify right side
    863,409.60x = 1,096,729,812,299.52
  5. Step 5: Solve for x
    x = 1,096,729,812,299.52/863,409.60
  6. Step 6: Final answer
    x = 1,270,231.20

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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.