Home / 428,786.98-642,848.32-248,595.26

Finding the Fourth Proportional to 428,786.98, 642,848.32 and 248,595.26

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Solution

The fourth proportional to 428,786.98, 642,848.32 and 248,595.26 is: 372,700.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,786.98 : 642,848.32 = 248,595.26 : x
  2. Step 2: Convert to fraction form
    428,786.98/642,848.32 = 248,595.26/x
  3. Step 3: Cross multiply
    428,786.98x = 642,848.32 × 248,595.26
  4. Step 4: Simplify right side
    428,786.98x = 159,809,047,801.55
  5. Step 5: Solve for x
    x = 159,809,047,801.55/428,786.98
  6. Step 6: Final answer
    x = 372,700.33

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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.