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Finding the Fourth Proportional to 450,205.46, 620,675.54 and 288,780.28

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Solution

The fourth proportional to 450,205.46, 620,675.54 and 288,780.28 is: 398,126.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,205.46 : 620,675.54 = 288,780.28 : x
  2. Step 2: Convert to fraction form
    450,205.46/620,675.54 = 288,780.28/x
  3. Step 3: Cross multiply
    450,205.46x = 620,675.54 × 288,780.28
  4. Step 4: Simplify right side
    450,205.46x = 179,238,856,230.35
  5. Step 5: Solve for x
    x = 179,238,856,230.35/450,205.46
  6. Step 6: Final answer
    x = 398,126.79

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1.5x scale

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.