Home / 679,722.85-1,019,518.26-206,412.31

Finding the Fourth Proportional to 679,722.85, 1,019,518.26 and 206,412.31

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Solution

The fourth proportional to 679,722.85, 1,019,518.26 and 206,412.31 is: 309,598.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,722.85 : 1,019,518.26 = 206,412.31 : x
  2. Step 2: Convert to fraction form
    679,722.85/1,019,518.26 = 206,412.31/x
  3. Step 3: Cross multiply
    679,722.85x = 1,019,518.26 × 206,412.31
  4. Step 4: Simplify right side
    679,722.85x = 210,441,118,101.72
  5. Step 5: Solve for x
    x = 210,441,118,101.72/679,722.85
  6. Step 6: Final answer
    x = 309,598.42

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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.