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Finding the Fourth Proportional to 655,421.92, 903,999.36 and 494,283.76

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Solution

The fourth proportional to 655,421.92, 903,999.36 and 494,283.76 is: 681,747.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,421.92 : 903,999.36 = 494,283.76 : x
  2. Step 2: Convert to fraction form
    655,421.92/903,999.36 = 494,283.76/x
  3. Step 3: Cross multiply
    655,421.92x = 903,999.36 × 494,283.76
  4. Step 4: Simplify right side
    655,421.92x = 446,832,202,698.39
  5. Step 5: Solve for x
    x = 446,832,202,698.39/655,421.92
  6. Step 6: Final answer
    x = 681,747.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.