Home / 430,628.96-645,509.21-270,819.10

Finding the Fourth Proportional to 430,628.96, 645,509.21 and 270,819.10

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Solution

The fourth proportional to 430,628.96, 645,509.21 and 270,819.10 is: 405,955.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,628.96 : 645,509.21 = 270,819.10 : x
  2. Step 2: Convert to fraction form
    430,628.96/645,509.21 = 270,819.10/x
  3. Step 3: Cross multiply
    430,628.96x = 645,509.21 × 270,819.10
  4. Step 4: Simplify right side
    430,628.96x = 174,816,218,712.27
  5. Step 5: Solve for x
    x = 174,816,218,712.27/430,628.96
  6. Step 6: Final answer
    x = 405,955.56

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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.