Home / 920,603-1,380,921.78-255,772.28

Finding the Fourth Proportional to 920,603, 1,380,921.78 and 255,772.28

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Solution

The fourth proportional to 920,603, 1,380,921.78 and 255,772.28 is: 383,663.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,603 : 1,380,921.78 = 255,772.28 : x
  2. Step 2: Convert to fraction form
    920,603/1,380,921.78 = 255,772.28/x
  3. Step 3: Cross multiply
    920,603x = 1,380,921.78 × 255,772.28
  4. Step 4: Simplify right side
    920,603x = 353,201,512,172.26
  5. Step 5: Solve for x
    x = 353,201,512,172.26/920,603
  6. Step 6: Final answer
    x = 383,663.22

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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.