Home / 426,572.31-639,975.36-186,642.72

Finding the Fourth Proportional to 426,572.31, 639,975.36 and 186,642.72

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Solution

The fourth proportional to 426,572.31, 639,975.36 and 186,642.72 is: 280,015.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,572.31 : 639,975.36 = 186,642.72 : x
  2. Step 2: Convert to fraction form
    426,572.31/639,975.36 = 186,642.72/x
  3. Step 3: Cross multiply
    426,572.31x = 639,975.36 × 186,642.72
  4. Step 4: Simplify right side
    426,572.31x = 119,446,737,790.29
  5. Step 5: Solve for x
    x = 119,446,737,790.29/426,572.31
  6. Step 6: Final answer
    x = 280,015.22

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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.