Home / 1,242,003.90-1,863,005.85-864,090.30

Finding the Fourth Proportional to 1,242,003.90, 1,863,005.85 and 864,090.30

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Solution

The fourth proportional to 1,242,003.90, 1,863,005.85 and 864,090.30 is: 1,296,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,003.90 : 1,863,005.85 = 864,090.30 : x
  2. Step 2: Convert to fraction form
    1,242,003.90/1,863,005.85 = 864,090.30/x
  3. Step 3: Cross multiply
    1,242,003.90x = 1,863,005.85 × 864,090.30
  4. Step 4: Simplify right side
    1,242,003.90x = 1,609,805,283,828.26
  5. Step 5: Solve for x
    x = 1,609,805,283,828.26/1,242,003.90
  6. Step 6: Final answer
    x = 1,296,135.45

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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.