Home / 1,521,378.98-2,099,643.83-842,315.48

Finding the Fourth Proportional to 1,521,378.98, 2,099,643.83 and 842,315.48

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Solution

The fourth proportional to 1,521,378.98, 2,099,643.83 and 842,315.48 is: 1,162,473.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521,378.98 : 2,099,643.83 = 842,315.48 : x
  2. Step 2: Convert to fraction form
    1,521,378.98/2,099,643.83 = 842,315.48/x
  3. Step 3: Cross multiply
    1,521,378.98x = 2,099,643.83 × 842,315.48
  4. Step 4: Simplify right side
    1,521,378.98x = 1,768,562,485,785.69
  5. Step 5: Solve for x
    x = 1,768,562,485,785.69/1,521,378.98
  6. Step 6: Final answer
    x = 1,162,473.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.