Home / 679,726.72-1,019,591.70-206,415.64

Finding the Fourth Proportional to 679,726.72, 1,019,591.70 and 206,415.64

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Solution

The fourth proportional to 679,726.72, 1,019,591.70 and 206,415.64 is: 309,623.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,726.72 : 1,019,591.70 = 206,415.64 : x
  2. Step 2: Convert to fraction form
    679,726.72/1,019,591.70 = 206,415.64/x
  3. Step 3: Cross multiply
    679,726.72x = 1,019,591.70 × 206,415.64
  4. Step 4: Simplify right side
    679,726.72x = 210,459,673,294.19
  5. Step 5: Solve for x
    x = 210,459,673,294.19/679,726.72
  6. Step 6: Final answer
    x = 309,623.95

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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.