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Finding the Fourth Proportional to 558,205.56, 770,329.84 and 303,556.76

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Solution

The fourth proportional to 558,205.56, 770,329.84 and 303,556.76 is: 418,911.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,205.56 : 770,329.84 = 303,556.76 : x
  2. Step 2: Convert to fraction form
    558,205.56/770,329.84 = 303,556.76/x
  3. Step 3: Cross multiply
    558,205.56x = 770,329.84 × 303,556.76
  4. Step 4: Simplify right side
    558,205.56x = 233,838,830,361.72
  5. Step 5: Solve for x
    x = 233,838,830,361.72/558,205.56
  6. Step 6: Final answer
    x = 418,911.68

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Double scale
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Similar ratio
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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.