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Finding the Fourth Proportional to 525,997.20, 788,558.40 and 276,679.20

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Solution

The fourth proportional to 525,997.20, 788,558.40 and 276,679.20 is: 414,788.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,997.20 : 788,558.40 = 276,679.20 : x
  2. Step 2: Convert to fraction form
    525,997.20/788,558.40 = 276,679.20/x
  3. Step 3: Cross multiply
    525,997.20x = 788,558.40 × 276,679.20
  4. Step 4: Simplify right side
    525,997.20x = 218,177,707,265.28
  5. Step 5: Solve for x
    x = 218,177,707,265.28/525,997.20
  6. Step 6: Final answer
    x = 414,788.72

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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.