Home / 1,521,478.72-2,099,706.24-842,415.28

Finding the Fourth Proportional to 1,521,478.72, 2,099,706.24 and 842,415.28

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Solution

The fourth proportional to 1,521,478.72, 2,099,706.24 and 842,415.28 is: 1,162,569.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521,478.72 : 2,099,706.24 = 842,415.28 : x
  2. Step 2: Convert to fraction form
    1,521,478.72/2,099,706.24 = 842,415.28/x
  3. Step 3: Cross multiply
    1,521,478.72x = 2,099,706.24 × 842,415.28
  4. Step 4: Simplify right side
    1,521,478.72x = 1,768,824,620,087.35
  5. Step 5: Solve for x
    x = 1,768,824,620,087.35/1,521,478.72
  6. Step 6: Final answer
    x = 1,162,569.41

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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.