Home / 864,209.70-1,296,314.55-509,915.70

Finding the Fourth Proportional to 864,209.70, 1,296,314.55 and 509,915.70

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Solution

The fourth proportional to 864,209.70, 1,296,314.55 and 509,915.70 is: 764,873.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,209.70 : 1,296,314.55 = 509,915.70 : x
  2. Step 2: Convert to fraction form
    864,209.70/1,296,314.55 = 509,915.70/x
  3. Step 3: Cross multiply
    864,209.70x = 1,296,314.55 × 509,915.70
  4. Step 4: Simplify right side
    864,209.70x = 661,011,141,183.44
  5. Step 5: Solve for x
    x = 661,011,141,183.44/864,209.70
  6. Step 6: Final answer
    x = 764,873.55

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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.