Home / 839,909.75-1,258,973.40-412,843.32

Finding the Fourth Proportional to 839,909.75, 1,258,973.40 and 412,843.32

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Solution

The fourth proportional to 839,909.75, 1,258,973.40 and 412,843.32 is: 618,826.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,909.75 : 1,258,973.40 = 412,843.32 : x
  2. Step 2: Convert to fraction form
    839,909.75/1,258,973.40 = 412,843.32/x
  3. Step 3: Cross multiply
    839,909.75x = 1,258,973.40 × 412,843.32
  4. Step 4: Simplify right side
    839,909.75x = 519,758,758,247.69
  5. Step 5: Solve for x
    x = 519,758,758,247.69/839,909.75
  6. Step 6: Final answer
    x = 618,826.92

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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.