Home / 428,721,096.69-591,416,975.26-280,129,085.01

Finding the Fourth Proportional to 428,721,096.69, 591,416,975.26 and 280,129,085.01

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Solution

The fourth proportional to 428,721,096.69, 591,416,975.26 and 280,129,085.01 is: 386,435,604.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,721,096.69 : 591,416,975.26 = 280,129,085.01 : x
  2. Step 2: Convert to fraction form
    428,721,096.69/591,416,975.26 = 280,129,085.01/x
  3. Step 3: Cross multiply
    428,721,096.69x = 591,416,975.26 × 280,129,085.01
  4. Step 4: Simplify right side
    428,721,096.69x = 165,673,096,138,965,600
  5. Step 5: Solve for x
    x = 165,673,096,138,965,600/428,721,096.69
  6. Step 6: Final answer
    x = 386,435,604.45

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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.