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Finding the Fourth Proportional to 655,808.82, 905,018.06 and 380,220.24

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Solution

The fourth proportional to 655,808.82, 905,018.06 and 380,220.24 is: 524,705.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,808.82 : 905,018.06 = 380,220.24 : x
  2. Step 2: Convert to fraction form
    655,808.82/905,018.06 = 380,220.24/x
  3. Step 3: Cross multiply
    655,808.82x = 905,018.06 × 380,220.24
  4. Step 4: Simplify right side
    655,808.82x = 344,106,188,321.90
  5. Step 5: Solve for x
    x = 344,106,188,321.90/655,808.82
  6. Step 6: Final answer
    x = 524,705.03

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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.