Home / 430,765.63-645,566.16-311,027.38

Finding the Fourth Proportional to 430,765.63, 645,566.16 and 311,027.38

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Solution

The fourth proportional to 430,765.63, 645,566.16 and 311,027.38 is: 466,120.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,765.63 : 645,566.16 = 311,027.38 : x
  2. Step 2: Convert to fraction form
    430,765.63/645,566.16 = 311,027.38/x
  3. Step 3: Cross multiply
    430,765.63x = 645,566.16 × 311,027.38
  4. Step 4: Simplify right side
    430,765.63x = 200,788,752,975.38
  5. Step 5: Solve for x
    x = 200,788,752,975.38/430,765.63
  6. Step 6: Final answer
    x = 466,120.64

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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.