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Finding the Fourth Proportional to 655,953.75, 984,009.48 and 620,081.49

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Solution

The fourth proportional to 655,953.75, 984,009.48 and 620,081.49 is: 930,196.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,953.75 : 984,009.48 = 620,081.49 : x
  2. Step 2: Convert to fraction form
    655,953.75/984,009.48 = 620,081.49/x
  3. Step 3: Cross multiply
    655,953.75x = 984,009.48 × 620,081.49
  4. Step 4: Simplify right side
    655,953.75x = 610,166,064,532.53
  5. Step 5: Solve for x
    x = 610,166,064,532.53/655,953.75
  6. Step 6: Final answer
    x = 930,196.78

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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.