Home / 679,880.64-1,019,819.84-323,814.72

Finding the Fourth Proportional to 679,880.64, 1,019,819.84 and 323,814.72

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Solution

The fourth proportional to 679,880.64, 1,019,819.84 and 323,814.72 is: 485,721.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,880.64 : 1,019,819.84 = 323,814.72 : x
  2. Step 2: Convert to fraction form
    679,880.64/1,019,819.84 = 323,814.72/x
  3. Step 3: Cross multiply
    679,880.64x = 1,019,819.84 × 323,814.72
  4. Step 4: Simplify right side
    679,880.64x = 330,232,675,940.05
  5. Step 5: Solve for x
    x = 330,232,675,940.05/679,880.64
  6. Step 6: Final answer
    x = 485,721.55

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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.