Home / 680,768.10-1,021,042.80-207,343.35

Finding the Fourth Proportional to 680,768.10, 1,021,042.80 and 207,343.35

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Solution

The fourth proportional to 680,768.10, 1,021,042.80 and 207,343.35 is: 310,981.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,768.10 : 1,021,042.80 = 207,343.35 : x
  2. Step 2: Convert to fraction form
    680,768.10/1,021,042.80 = 207,343.35/x
  3. Step 3: Cross multiply
    680,768.10x = 1,021,042.80 × 207,343.35
  4. Step 4: Simplify right side
    680,768.10x = 211,706,434,645.38
  5. Step 5: Solve for x
    x = 211,706,434,645.38/680,768.10
  6. Step 6: Final answer
    x = 310,981.72

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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.