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Finding the Fourth Proportional to 659,871.54, 989,852.43 and 210,626.46

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Solution

The fourth proportional to 659,871.54, 989,852.43 and 210,626.46 is: 315,954.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,871.54 : 989,852.43 = 210,626.46 : x
  2. Step 2: Convert to fraction form
    659,871.54/989,852.43 = 210,626.46/x
  3. Step 3: Cross multiply
    659,871.54x = 989,852.43 × 210,626.46
  4. Step 4: Simplify right side
    659,871.54x = 208,489,113,253.30
  5. Step 5: Solve for x
    x = 208,489,113,253.30/659,871.54
  6. Step 6: Final answer
    x = 315,954.09

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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.