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Finding the Fourth Proportional to 450,046.08, 620,770.98 and 288,645.48

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Solution

The fourth proportional to 450,046.08, 620,770.98 and 288,645.48 is: 398,143.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,046.08 : 620,770.98 = 288,645.48 : x
  2. Step 2: Convert to fraction form
    450,046.08/620,770.98 = 288,645.48/x
  3. Step 3: Cross multiply
    450,046.08x = 620,770.98 × 288,645.48
  4. Step 4: Simplify right side
    450,046.08x = 179,182,737,492.17
  5. Step 5: Solve for x
    x = 179,182,737,492.17/450,046.08
  6. Step 6: Final answer
    x = 398,143.09

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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.