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Finding the Fourth Proportional to 551,427.10, 827,140.65 and 530,431.90

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Solution

The fourth proportional to 551,427.10, 827,140.65 and 530,431.90 is: 795,647.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,427.10 : 827,140.65 = 530,431.90 : x
  2. Step 2: Convert to fraction form
    551,427.10/827,140.65 = 530,431.90/x
  3. Step 3: Cross multiply
    551,427.10x = 827,140.65 × 530,431.90
  4. Step 4: Simplify right side
    551,427.10x = 438,741,786,546.74
  5. Step 5: Solve for x
    x = 438,741,786,546.74/551,427.10
  6. Step 6: Final answer
    x = 795,647.85

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Similar ratio
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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.