Home / 753,128.46-1,129,692.78-220,649.58

Finding the Fourth Proportional to 753,128.46, 1,129,692.78 and 220,649.58

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Solution

The fourth proportional to 753,128.46, 1,129,692.78 and 220,649.58 is: 330,974.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,128.46 : 1,129,692.78 = 220,649.58 : x
  2. Step 2: Convert to fraction form
    753,128.46/1,129,692.78 = 220,649.58/x
  3. Step 3: Cross multiply
    753,128.46x = 1,129,692.78 × 220,649.58
  4. Step 4: Simplify right side
    753,128.46x = 249,266,237,436.03
  5. Step 5: Solve for x
    x = 249,266,237,436.03/753,128.46
  6. Step 6: Final answer
    x = 330,974.40

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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.