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Finding the Fourth Proportional to 841,806.60, 1,261,324.80 and 486,200.40

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Solution

The fourth proportional to 841,806.60, 1,261,324.80 and 486,200.40 is: 728,500.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    841,806.60 : 1,261,324.80 = 486,200.40 : x
  2. Step 2: Convert to fraction form
    841,806.60/1,261,324.80 = 486,200.40/x
  3. Step 3: Cross multiply
    841,806.60x = 1,261,324.80 × 486,200.40
  4. Step 4: Simplify right side
    841,806.60x = 613,256,622,289.92
  5. Step 5: Solve for x
    x = 613,256,622,289.92/841,806.60
  6. Step 6: Final answer
    x = 728,500.61

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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.