Home / 428,670,605.44-642,194,572.80-253,269,096.96

Finding the Fourth Proportional to 428,670,605.44, 642,194,572.80 and 253,269,096.96

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Solution

The fourth proportional to 428,670,605.44, 642,194,572.80 and 253,269,096.96 is: 379,424,288.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,670,605.44 : 642,194,572.80 = 253,269,096.96 : x
  2. Step 2: Convert to fraction form
    428,670,605.44/642,194,572.80 = 253,269,096.96/x
  3. Step 3: Cross multiply
    428,670,605.44x = 642,194,572.80 × 253,269,096.96
  4. Step 4: Simplify right side
    428,670,605.44x = 162,648,039,525,668,960
  5. Step 5: Solve for x
    x = 162,648,039,525,668,960/428,670,605.44
  6. Step 6: Final answer
    x = 379,424,288.63

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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.