Home / 1,123,211.28-1,550,031.24-639,821.20

Finding the Fourth Proportional to 1,123,211.28, 1,550,031.24 and 639,821.20

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Solution

The fourth proportional to 1,123,211.28, 1,550,031.24 and 639,821.20 is: 882,953.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,211.28 : 1,550,031.24 = 639,821.20 : x
  2. Step 2: Convert to fraction form
    1,123,211.28/1,550,031.24 = 639,821.20/x
  3. Step 3: Cross multiply
    1,123,211.28x = 1,550,031.24 × 639,821.20
  4. Step 4: Simplify right side
    1,123,211.28x = 991,742,848,014.29
  5. Step 5: Solve for x
    x = 991,742,848,014.29/1,123,211.28
  6. Step 6: Final answer
    x = 882,953.07

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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.