Home / 764,123.60-1,146,185.40-409,829.60

Finding the Fourth Proportional to 764,123.60, 1,146,185.40 and 409,829.60

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Solution

The fourth proportional to 764,123.60, 1,146,185.40 and 409,829.60 is: 614,744.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,123.60 : 1,146,185.40 = 409,829.60 : x
  2. Step 2: Convert to fraction form
    764,123.60/1,146,185.40 = 409,829.60/x
  3. Step 3: Cross multiply
    764,123.60x = 1,146,185.40 × 409,829.60
  4. Step 4: Simplify right side
    764,123.60x = 469,740,704,007.84
  5. Step 5: Solve for x
    x = 469,740,704,007.84/764,123.60
  6. Step 6: Final answer
    x = 614,744.40

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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.