Home / 679,521.29-1,019,288.07-206,206.64

Finding the Fourth Proportional to 679,521.29, 1,019,288.07 and 206,206.64

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Solution

The fourth proportional to 679,521.29, 1,019,288.07 and 206,206.64 is: 309,311.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,521.29 : 1,019,288.07 = 206,206.64 : x
  2. Step 2: Convert to fraction form
    679,521.29/1,019,288.07 = 206,206.64/x
  3. Step 3: Cross multiply
    679,521.29x = 1,019,288.07 × 206,206.64
  4. Step 4: Simplify right side
    679,521.29x = 210,183,968,106.79
  5. Step 5: Solve for x
    x = 210,183,968,106.79/679,521.29
  6. Step 6: Final answer
    x = 309,311.82

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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.