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Finding the Fourth Proportional to 993,364.80, 1,489,204.80 and 361,910.40

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Solution

The fourth proportional to 993,364.80, 1,489,204.80 and 361,910.40 is: 542,558.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,364.80 : 1,489,204.80 = 361,910.40 : x
  2. Step 2: Convert to fraction form
    993,364.80/1,489,204.80 = 361,910.40/x
  3. Step 3: Cross multiply
    993,364.80x = 1,489,204.80 × 361,910.40
  4. Step 4: Simplify right side
    993,364.80x = 538,958,704,849.92
  5. Step 5: Solve for x
    x = 538,958,704,849.92/993,364.80
  6. Step 6: Final answer
    x = 542,558.69

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1.5x scale

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.