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Finding the Fourth Proportional to 557,165.70, 835,748.55 and 521,736.30

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Solution

The fourth proportional to 557,165.70, 835,748.55 and 521,736.30 is: 782,604.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,165.70 : 835,748.55 = 521,736.30 : x
  2. Step 2: Convert to fraction form
    557,165.70/835,748.55 = 521,736.30/x
  3. Step 3: Cross multiply
    557,165.70x = 835,748.55 × 521,736.30
  4. Step 4: Simplify right side
    557,165.70x = 436,040,356,207.37
  5. Step 5: Solve for x
    x = 436,040,356,207.37/557,165.70
  6. Step 6: Final answer
    x = 782,604.45

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Double scale
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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.