Home / 1,388,292.63-1,915,763.90-768,060.51

Finding the Fourth Proportional to 1,388,292.63, 1,915,763.90 and 768,060.51

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Solution

The fourth proportional to 1,388,292.63, 1,915,763.90 and 768,060.51 is: 1,059,879.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,292.63 : 1,915,763.90 = 768,060.51 : x
  2. Step 2: Convert to fraction form
    1,388,292.63/1,915,763.90 = 768,060.51/x
  3. Step 3: Cross multiply
    1,388,292.63x = 1,915,763.90 × 768,060.51
  4. Step 4: Simplify right side
    1,388,292.63x = 1,471,422,598,073.59
  5. Step 5: Solve for x
    x = 1,471,422,598,073.59/1,388,292.63
  6. Step 6: Final answer
    x = 1,059,879.28

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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.