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Finding the Fourth Proportional to 533,400.90, 800,101.35 and 489,855.30

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Solution

The fourth proportional to 533,400.90, 800,101.35 and 489,855.30 is: 734,782.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,400.90 : 800,101.35 = 489,855.30 : x
  2. Step 2: Convert to fraction form
    533,400.90/800,101.35 = 489,855.30/x
  3. Step 3: Cross multiply
    533,400.90x = 800,101.35 × 489,855.30
  4. Step 4: Simplify right side
    533,400.90x = 391,933,886,834.66
  5. Step 5: Solve for x
    x = 391,933,886,834.66/533,400.90
  6. Step 6: Final answer
    x = 734,782.95

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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.