Home / 764,178.60-1,146,267.90-409,884.60

Finding the Fourth Proportional to 764,178.60, 1,146,267.90 and 409,884.60

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Solution

The fourth proportional to 764,178.60, 1,146,267.90 and 409,884.60 is: 614,826.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,178.60 : 1,146,267.90 = 409,884.60 : x
  2. Step 2: Convert to fraction form
    764,178.60/1,146,267.90 = 409,884.60/x
  3. Step 3: Cross multiply
    764,178.60x = 1,146,267.90 × 409,884.60
  4. Step 4: Simplify right side
    764,178.60x = 469,837,559,684.34
  5. Step 5: Solve for x
    x = 469,837,559,684.34/764,178.60
  6. Step 6: Final answer
    x = 614,826.90

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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.