Home / 945,245.76-1,303,988.92-639,429.20

Finding the Fourth Proportional to 945,245.76, 1,303,988.92 and 639,429.20

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Solution

The fourth proportional to 945,245.76, 1,303,988.92 and 639,429.20 is: 882,107.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,245.76 : 1,303,988.92 = 639,429.20 : x
  2. Step 2: Convert to fraction form
    945,245.76/1,303,988.92 = 639,429.20/x
  3. Step 3: Cross multiply
    945,245.76x = 1,303,988.92 × 639,429.20
  4. Step 4: Simplify right side
    945,245.76x = 833,808,591,924.46
  5. Step 5: Solve for x
    x = 833,808,591,924.46/945,245.76
  6. Step 6: Final answer
    x = 882,107.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.