Home / 839,511.25-1,259,143.85-412,932.58

Finding the Fourth Proportional to 839,511.25, 1,259,143.85 and 412,932.58

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Solution

The fourth proportional to 839,511.25, 1,259,143.85 and 412,932.58 is: 619,338.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,511.25 : 1,259,143.85 = 412,932.58 : x
  2. Step 2: Convert to fraction form
    839,511.25/1,259,143.85 = 412,932.58/x
  3. Step 3: Cross multiply
    839,511.25x = 1,259,143.85 × 412,932.58
  4. Step 4: Simplify right side
    839,511.25x = 519,941,516,456.11
  5. Step 5: Solve for x
    x = 519,941,516,456.11/839,511.25
  6. Step 6: Final answer
    x = 619,338.36

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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.