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Finding the Fourth Proportional to 483,449.12, 666,973.68 and 356,426.72

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Solution

The fourth proportional to 483,449.12, 666,973.68 and 356,426.72 is: 491,731.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,449.12 : 666,973.68 = 356,426.72 : x
  2. Step 2: Convert to fraction form
    483,449.12/666,973.68 = 356,426.72/x
  3. Step 3: Cross multiply
    483,449.12x = 666,973.68 × 356,426.72
  4. Step 4: Simplify right side
    483,449.12x = 237,727,241,088.73
  5. Step 5: Solve for x
    x = 237,727,241,088.73/483,449.12
  6. Step 6: Final answer
    x = 491,731.67

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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.