Home / 679,515.91-1,019,280.02-206,201.28

Finding the Fourth Proportional to 679,515.91, 1,019,280.02 and 206,201.28

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Solution

The fourth proportional to 679,515.91, 1,019,280.02 and 206,201.28 is: 309,303.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,515.91 : 1,019,280.02 = 206,201.28 : x
  2. Step 2: Convert to fraction form
    679,515.91/1,019,280.02 = 206,201.28/x
  3. Step 3: Cross multiply
    679,515.91x = 1,019,280.02 × 206,201.28
  4. Step 4: Simplify right side
    679,515.91x = 210,176,844,802.43
  5. Step 5: Solve for x
    x = 210,176,844,802.43/679,515.91
  6. Step 6: Final answer
    x = 309,303.79

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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.