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Finding the Fourth Proportional to 547,474.80, 820,855.80 and 491,487.60

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Solution

The fourth proportional to 547,474.80, 820,855.80 and 491,487.60 is: 736,911.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,474.80 : 820,855.80 = 491,487.60 : x
  2. Step 2: Convert to fraction form
    547,474.80/820,855.80 = 491,487.60/x
  3. Step 3: Cross multiply
    547,474.80x = 820,855.80 × 491,487.60
  4. Step 4: Simplify right side
    547,474.80x = 403,440,447,088.08
  5. Step 5: Solve for x
    x = 403,440,447,088.08/547,474.80
  6. Step 6: Final answer
    x = 736,911.45

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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.