Home / 738,039.40-1,107,059.10-509,716.60

Finding the Fourth Proportional to 738,039.40, 1,107,059.10 and 509,716.60

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Solution

The fourth proportional to 738,039.40, 1,107,059.10 and 509,716.60 is: 764,574.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,039.40 : 1,107,059.10 = 509,716.60 : x
  2. Step 2: Convert to fraction form
    738,039.40/1,107,059.10 = 509,716.60/x
  3. Step 3: Cross multiply
    738,039.40x = 1,107,059.10 × 509,716.60
  4. Step 4: Simplify right side
    738,039.40x = 564,286,400,451.06
  5. Step 5: Solve for x
    x = 564,286,400,451.06/738,039.40
  6. Step 6: Final answer
    x = 764,574.90

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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.