Home / 1,271,273.40-1,906,904.34-430,405.56

Finding the Fourth Proportional to 1,271,273.40, 1,906,904.34 and 430,405.56

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Solution

The fourth proportional to 1,271,273.40, 1,906,904.34 and 430,405.56 is: 645,606.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,273.40 : 1,906,904.34 = 430,405.56 : x
  2. Step 2: Convert to fraction form
    1,271,273.40/1,906,904.34 = 430,405.56/x
  3. Step 3: Cross multiply
    1,271,273.40x = 1,906,904.34 × 430,405.56
  4. Step 4: Simplify right side
    1,271,273.40x = 820,742,230,324.13
  5. Step 5: Solve for x
    x = 820,742,230,324.13/1,271,273.40
  6. Step 6: Final answer
    x = 645,606.39

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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.