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Finding the Fourth Proportional to 655,266.30, 982,899.45 and 388,889.70

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Solution

The fourth proportional to 655,266.30, 982,899.45 and 388,889.70 is: 583,334.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,266.30 : 982,899.45 = 388,889.70 : x
  2. Step 2: Convert to fraction form
    655,266.30/982,899.45 = 388,889.70/x
  3. Step 3: Cross multiply
    655,266.30x = 982,899.45 × 388,889.70
  4. Step 4: Simplify right side
    655,266.30x = 382,239,472,240.67
  5. Step 5: Solve for x
    x = 382,239,472,240.67/655,266.30
  6. Step 6: Final answer
    x = 583,334.55

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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.