Home / 839,444.60-1,259,538.70-439,990.40

Finding the Fourth Proportional to 839,444.60, 1,259,538.70 and 439,990.40

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Solution

The fourth proportional to 839,444.60, 1,259,538.70 and 439,990.40 is: 660,180.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,444.60 : 1,259,538.70 = 439,990.40 : x
  2. Step 2: Convert to fraction form
    839,444.60/1,259,538.70 = 439,990.40/x
  3. Step 3: Cross multiply
    839,444.60x = 1,259,538.70 × 439,990.40
  4. Step 4: Simplify right side
    839,444.60x = 554,184,936,428.48
  5. Step 5: Solve for x
    x = 554,184,936,428.48/839,444.60
  6. Step 6: Final answer
    x = 660,180.48

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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.