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Finding the Fourth Proportional to 557,171.70, 835,757.55 and 521,742.30

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Solution

The fourth proportional to 557,171.70, 835,757.55 and 521,742.30 is: 782,613.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,171.70 : 835,757.55 = 521,742.30 : x
  2. Step 2: Convert to fraction form
    557,171.70/835,757.55 = 521,742.30/x
  3. Step 3: Cross multiply
    557,171.70x = 835,757.55 × 521,742.30
  4. Step 4: Simplify right side
    557,171.70x = 436,050,066,379.37
  5. Step 5: Solve for x
    x = 436,050,066,379.37/557,171.70
  6. Step 6: Final answer
    x = 782,613.45

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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.