Home / 862,293.90-1,189,967.72-518,135.56

Finding the Fourth Proportional to 862,293.90, 1,189,967.72 and 518,135.56

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Solution

The fourth proportional to 862,293.90, 1,189,967.72 and 518,135.56 is: 715,028.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,293.90 : 1,189,967.72 = 518,135.56 : x
  2. Step 2: Convert to fraction form
    862,293.90/1,189,967.72 = 518,135.56/x
  3. Step 3: Cross multiply
    862,293.90x = 1,189,967.72 × 518,135.56
  4. Step 4: Simplify right side
    862,293.90x = 616,564,590,984.12
  5. Step 5: Solve for x
    x = 616,564,590,984.12/862,293.90
  6. Step 6: Final answer
    x = 715,028.36

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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.