Home / 839,261.80-1,259,264.76-439,807.60

Finding the Fourth Proportional to 839,261.80, 1,259,264.76 and 439,807.60

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Solution

The fourth proportional to 839,261.80, 1,259,264.76 and 439,807.60 is: 659,906.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,261.80 : 1,259,264.76 = 439,807.60 : x
  2. Step 2: Convert to fraction form
    839,261.80/1,259,264.76 = 439,807.60/x
  3. Step 3: Cross multiply
    839,261.80x = 1,259,264.76 × 439,807.60
  4. Step 4: Simplify right side
    839,261.80x = 553,834,211,860.18
  5. Step 5: Solve for x
    x = 553,834,211,860.18/839,261.80
  6. Step 6: Final answer
    x = 659,906.37

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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.