Home / 534,786.30-738,005.13-308,431.80

Finding the Fourth Proportional to 534,786.30, 738,005.13 and 308,431.80

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Solution

The fourth proportional to 534,786.30, 738,005.13 and 308,431.80 is: 425,635.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,786.30 : 738,005.13 = 308,431.80 : x
  2. Step 2: Convert to fraction form
    534,786.30/738,005.13 = 308,431.80/x
  3. Step 3: Cross multiply
    534,786.30x = 738,005.13 × 308,431.80
  4. Step 4: Simplify right side
    534,786.30x = 227,624,250,655.13
  5. Step 5: Solve for x
    x = 227,624,250,655.13/534,786.30
  6. Step 6: Final answer
    x = 425,635.90

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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.