Home / 809,935.60-1,214,903.40-620,978.80

Finding the Fourth Proportional to 809,935.60, 1,214,903.40 and 620,978.80

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Solution

The fourth proportional to 809,935.60, 1,214,903.40 and 620,978.80 is: 931,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,935.60 : 1,214,903.40 = 620,978.80 : x
  2. Step 2: Convert to fraction form
    809,935.60/1,214,903.40 = 620,978.80/x
  3. Step 3: Cross multiply
    809,935.60x = 1,214,903.40 × 620,978.80
  4. Step 4: Simplify right side
    809,935.60x = 754,429,255,447.92
  5. Step 5: Solve for x
    x = 754,429,255,447.92/809,935.60
  6. Step 6: Final answer
    x = 931,468.20

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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.