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Finding the Fourth Proportional to 551,405.55, 827,108.33 and 411,437.55

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Solution

The fourth proportional to 551,405.55, 827,108.33 and 411,437.55 is: 617,156.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,405.55 : 827,108.33 = 411,437.55 : x
  2. Step 2: Convert to fraction form
    551,405.55/827,108.33 = 411,437.55/x
  3. Step 3: Cross multiply
    551,405.55x = 827,108.33 × 411,437.55
  4. Step 4: Simplify right side
    551,405.55x = 340,303,422,822.60
  5. Step 5: Solve for x
    x = 340,303,422,822.60/551,405.55
  6. Step 6: Final answer
    x = 617,156.33

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Similar ratio
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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.