Home / 765,929.57-1,056,973.91-421,758.36

Finding the Fourth Proportional to 765,929.57, 1,056,973.91 and 421,758.36

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Solution

The fourth proportional to 765,929.57, 1,056,973.91 and 421,758.36 is: 582,021.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,929.57 : 1,056,973.91 = 421,758.36 : x
  2. Step 2: Convert to fraction form
    765,929.57/1,056,973.91 = 421,758.36/x
  3. Step 3: Cross multiply
    765,929.57x = 1,056,973.91 × 421,758.36
  4. Step 4: Simplify right side
    765,929.57x = 445,787,580,735.60
  5. Step 5: Solve for x
    x = 445,787,580,735.60/765,929.57
  6. Step 6: Final answer
    x = 582,021.64

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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.