Home / 428,913,593.19-643,288,105.13-166,597,853.67

Finding the Fourth Proportional to 428,913,593.19, 643,288,105.13 and 166,597,853.67

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Solution

The fourth proportional to 428,913,593.19, 643,288,105.13 and 166,597,853.67 is: 249,864,819.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,913,593.19 : 643,288,105.13 = 166,597,853.67 : x
  2. Step 2: Convert to fraction form
    428,913,593.19/643,288,105.13 = 166,597,853.67/x
  3. Step 3: Cross multiply
    428,913,593.19x = 643,288,105.13 × 166,597,853.67
  4. Step 4: Simplify right side
    428,913,593.19x = 107,170,417,605,266,320
  5. Step 5: Solve for x
    x = 107,170,417,605,266,320/428,913,593.19
  6. Step 6: Final answer
    x = 249,864,819.64

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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.