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Finding the Fourth Proportional to 460,958.50, 691,554.39 and 128,534.50

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Solution

The fourth proportional to 460,958.50, 691,554.39 and 128,534.50 is: 192,834.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,958.50 : 691,554.39 = 128,534.50 : x
  2. Step 2: Convert to fraction form
    460,958.50/691,554.39 = 128,534.50/x
  3. Step 3: Cross multiply
    460,958.50x = 691,554.39 × 128,534.50
  4. Step 4: Simplify right side
    460,958.50x = 88,888,597,741.46
  5. Step 5: Solve for x
    x = 88,888,597,741.46/460,958.50
  6. Step 6: Final answer
    x = 192,834.27

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1.5x scale

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.