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Finding the Fourth Proportional to 428,652,030.45, 642,978,045.68 and 425,628,721.65

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Solution

The fourth proportional to 428,652,030.45, 642,978,045.68 and 425,628,721.65 is: 638,443,082.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,652,030.45 : 642,978,045.68 = 425,628,721.65 : x
  2. Step 2: Convert to fraction form
    428,652,030.45/642,978,045.68 = 425,628,721.65/x
  3. Step 3: Cross multiply
    428,652,030.45x = 642,978,045.68 × 425,628,721.65
  4. Step 4: Simplify right side
    428,652,030.45x = 273,669,923,629,665,536
  5. Step 5: Solve for x
    x = 273,669,923,629,665,536/428,652,030.45
  6. Step 6: Final answer
    x = 638,443,082.48

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Why These Related Problems?

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