Home / 679,734.72-1,019,603.70-206,423.64

Finding the Fourth Proportional to 679,734.72, 1,019,603.70 and 206,423.64

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Solution

The fourth proportional to 679,734.72, 1,019,603.70 and 206,423.64 is: 309,635.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,734.72 : 1,019,603.70 = 206,423.64 : x
  2. Step 2: Convert to fraction form
    679,734.72/1,019,603.70 = 206,423.64/x
  3. Step 3: Cross multiply
    679,734.72x = 1,019,603.70 × 206,423.64
  4. Step 4: Simplify right side
    679,734.72x = 210,470,307,111.47
  5. Step 5: Solve for x
    x = 210,470,307,111.47/679,734.72
  6. Step 6: Final answer
    x = 309,635.95

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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.