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Finding the Fourth Proportional to 517,145.40, 775,718.10 and 448,716.60

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Solution

The fourth proportional to 517,145.40, 775,718.10 and 448,716.60 is: 673,074.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,145.40 : 775,718.10 = 448,716.60 : x
  2. Step 2: Convert to fraction form
    517,145.40/775,718.10 = 448,716.60/x
  3. Step 3: Cross multiply
    517,145.40x = 775,718.10 × 448,716.60
  4. Step 4: Simplify right side
    517,145.40x = 348,077,588,390.46
  5. Step 5: Solve for x
    x = 348,077,588,390.46/517,145.40
  6. Step 6: Final answer
    x = 673,074.90

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Similar ratio
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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.