Home / 764,123.80-1,146,185.70-409,829.80

Finding the Fourth Proportional to 764,123.80, 1,146,185.70 and 409,829.80

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Solution

The fourth proportional to 764,123.80, 1,146,185.70 and 409,829.80 is: 614,744.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,123.80 : 1,146,185.70 = 409,829.80 : x
  2. Step 2: Convert to fraction form
    764,123.80/1,146,185.70 = 409,829.80/x
  3. Step 3: Cross multiply
    764,123.80x = 1,146,185.70 × 409,829.80
  4. Step 4: Simplify right side
    764,123.80x = 469,741,056,193.86
  5. Step 5: Solve for x
    x = 469,741,056,193.86/764,123.80
  6. Step 6: Final answer
    x = 614,744.70

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.