Home / 428,112.46-642,269.37-124,513.32

Finding the Fourth Proportional to 428,112.46, 642,269.37 and 124,513.32

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Solution

The fourth proportional to 428,112.46, 642,269.37 and 124,513.32 is: 186,799.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,112.46 : 642,269.37 = 124,513.32 : x
  2. Step 2: Convert to fraction form
    428,112.46/642,269.37 = 124,513.32/x
  3. Step 3: Cross multiply
    428,112.46x = 642,269.37 × 124,513.32
  4. Step 4: Simplify right side
    428,112.46x = 79,971,092,864.86
  5. Step 5: Solve for x
    x = 79,971,092,864.86/428,112.46
  6. Step 6: Final answer
    x = 186,799.26

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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.