Home / 839,443.60-1,259,537.20-439,989.40

Finding the Fourth Proportional to 839,443.60, 1,259,537.20 and 439,989.40

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Solution

The fourth proportional to 839,443.60, 1,259,537.20 and 439,989.40 is: 660,178.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,443.60 : 1,259,537.20 = 439,989.40 : x
  2. Step 2: Convert to fraction form
    839,443.60/1,259,537.20 = 439,989.40/x
  3. Step 3: Cross multiply
    839,443.60x = 1,259,537.20 × 439,989.40
  4. Step 4: Simplify right side
    839,443.60x = 554,183,016,905.68
  5. Step 5: Solve for x
    x = 554,183,016,905.68/839,443.60
  6. Step 6: Final answer
    x = 660,178.98

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1.5x scale

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.