Home / 647,090.10-971,072.55-291,921.30

Finding the Fourth Proportional to 647,090.10, 971,072.55 and 291,921.30

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Solution

The fourth proportional to 647,090.10, 971,072.55 and 291,921.30 is: 438,079.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,090.10 : 971,072.55 = 291,921.30 : x
  2. Step 2: Convert to fraction form
    647,090.10/971,072.55 = 291,921.30/x
  3. Step 3: Cross multiply
    647,090.10x = 971,072.55 × 291,921.30
  4. Step 4: Simplify right side
    647,090.10x = 283,476,761,190.32
  5. Step 5: Solve for x
    x = 283,476,761,190.32/647,090.10
  6. Step 6: Final answer
    x = 438,079.27

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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.