Home / 1,271,274.40-1,906,905.84-430,406.56

Finding the Fourth Proportional to 1,271,274.40, 1,906,905.84 and 430,406.56

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Solution

The fourth proportional to 1,271,274.40, 1,906,905.84 and 430,406.56 is: 645,607.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,274.40 : 1,906,905.84 = 430,406.56 : x
  2. Step 2: Convert to fraction form
    1,271,274.40/1,906,905.84 = 430,406.56/x
  3. Step 3: Cross multiply
    1,271,274.40x = 1,906,905.84 × 430,406.56
  4. Step 4: Simplify right side
    1,271,274.40x = 820,744,782,838.31
  5. Step 5: Solve for x
    x = 820,744,782,838.31/1,271,274.40
  6. Step 6: Final answer
    x = 645,607.89

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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.