Home / 1,286,429.72-1,929,724.97-433,430.46

Finding the Fourth Proportional to 1,286,429.72, 1,929,724.97 and 433,430.46

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Solution

The fourth proportional to 1,286,429.72, 1,929,724.97 and 433,430.46 is: 650,172.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,429.72 : 1,929,724.97 = 433,430.46 : x
  2. Step 2: Convert to fraction form
    1,286,429.72/1,929,724.97 = 433,430.46/x
  3. Step 3: Cross multiply
    1,286,429.72x = 1,929,724.97 × 433,430.46
  4. Step 4: Simplify right side
    1,286,429.72x = 836,401,579,253.43
  5. Step 5: Solve for x
    x = 836,401,579,253.43/1,286,429.72
  6. Step 6: Final answer
    x = 650,172.78

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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.