Home / 430,629.71-645,510.33-270,819.85

Finding the Fourth Proportional to 430,629.71, 645,510.33 and 270,819.85

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Solution

The fourth proportional to 430,629.71, 645,510.33 and 270,819.85 is: 405,956.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,629.71 : 645,510.33 = 270,819.85 : x
  2. Step 2: Convert to fraction form
    430,629.71/645,510.33 = 270,819.85/x
  3. Step 3: Cross multiply
    430,629.71x = 645,510.33 × 270,819.85
  4. Step 4: Simplify right side
    430,629.71x = 174,817,007,516.50
  5. Step 5: Solve for x
    x = 174,817,007,516.50/430,629.71
  6. Step 6: Final answer
    x = 405,956.69

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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.