Home / 939,858.18-1,297,005.48-510,138.20

Finding the Fourth Proportional to 939,858.18, 1,297,005.48 and 510,138.20

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Solution

The fourth proportional to 939,858.18, 1,297,005.48 and 510,138.20 is: 703,991.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,858.18 : 1,297,005.48 = 510,138.20 : x
  2. Step 2: Convert to fraction form
    939,858.18/1,297,005.48 = 510,138.20/x
  3. Step 3: Cross multiply
    939,858.18x = 1,297,005.48 × 510,138.20
  4. Step 4: Simplify right side
    939,858.18x = 661,652,040,957.34
  5. Step 5: Solve for x
    x = 661,652,040,957.34/939,858.18
  6. Step 6: Final answer
    x = 703,991.36

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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.