Home / 679,379.10-1,018,809.45-205,907.10

Finding the Fourth Proportional to 679,379.10, 1,018,809.45 and 205,907.10

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Solution

The fourth proportional to 679,379.10, 1,018,809.45 and 205,907.10 is: 308,782.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,379.10 : 1,018,809.45 = 205,907.10 : x
  2. Step 2: Convert to fraction form
    679,379.10/1,018,809.45 = 205,907.10/x
  3. Step 3: Cross multiply
    679,379.10x = 1,018,809.45 × 205,907.10
  4. Step 4: Simplify right side
    679,379.10x = 209,780,099,302.10
  5. Step 5: Solve for x
    x = 209,780,099,302.10/679,379.10
  6. Step 6: Final answer
    x = 308,782.09

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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.