Home / 428,766,213.28-643,149,673.20-105,650,119.84

Finding the Fourth Proportional to 428,766,213.28, 643,149,673.20 and 105,650,119.84

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Solution

The fourth proportional to 428,766,213.28, 643,149,673.20 and 105,650,119.84 is: 158,475,266.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,766,213.28 : 643,149,673.20 = 105,650,119.84 : x
  2. Step 2: Convert to fraction form
    428,766,213.28/643,149,673.20 = 105,650,119.84/x
  3. Step 3: Cross multiply
    428,766,213.28x = 643,149,673.20 × 105,650,119.84
  4. Step 4: Simplify right side
    428,766,213.28x = 67,948,840,048,636,840
  5. Step 5: Solve for x
    x = 67,948,840,048,636,840/428,766,213.28
  6. Step 6: Final answer
    x = 158,475,266.81

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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.