Home / 455,031.20-682,692.60-305,440.40

Finding the Fourth Proportional to 455,031.20, 682,692.60 and 305,440.40

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Solution

The fourth proportional to 455,031.20, 682,692.60 and 305,440.40 is: 458,258.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,031.20 : 682,692.60 = 305,440.40 : x
  2. Step 2: Convert to fraction form
    455,031.20/682,692.60 = 305,440.40/x
  3. Step 3: Cross multiply
    455,031.20x = 682,692.60 × 305,440.40
  4. Step 4: Simplify right side
    455,031.20x = 208,521,900,821.04
  5. Step 5: Solve for x
    x = 208,521,900,821.04/455,031.20
  6. Step 6: Final answer
    x = 458,258.47

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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.