Home / 428,913,596.19-643,288,109.61-166,597,856.67

Finding the Fourth Proportional to 428,913,596.19, 643,288,109.61 and 166,597,856.67

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Solution

The fourth proportional to 428,913,596.19, 643,288,109.61 and 166,597,856.67 is: 249,864,824.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,913,596.19 : 643,288,109.61 = 166,597,856.67 : x
  2. Step 2: Convert to fraction form
    428,913,596.19/643,288,109.61 = 166,597,856.67/x
  3. Step 3: Cross multiply
    428,913,596.19x = 643,288,109.61 × 166,597,856.67
  4. Step 4: Simplify right side
    428,913,596.19x = 107,170,420,282,322,016
  5. Step 5: Solve for x
    x = 107,170,420,282,322,016/428,913,596.19
  6. Step 6: Final answer
    x = 249,864,824.14

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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.