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Finding the Fourth Proportional to 502,765.12, 693,817.60 and 276,424.96

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Solution

The fourth proportional to 502,765.12, 693,817.60 and 276,424.96 is: 381,467.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,765.12 : 693,817.60 = 276,424.96 : x
  2. Step 2: Convert to fraction form
    502,765.12/693,817.60 = 276,424.96/x
  3. Step 3: Cross multiply
    502,765.12x = 693,817.60 × 276,424.96
  4. Step 4: Simplify right side
    502,765.12x = 191,788,502,327.30
  5. Step 5: Solve for x
    x = 191,788,502,327.30/502,765.12
  6. Step 6: Final answer
    x = 381,467.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.