Home / 492,637.29-679,847.03-288,639.39

Finding the Fourth Proportional to 492,637.29, 679,847.03 and 288,639.39

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Solution

The fourth proportional to 492,637.29, 679,847.03 and 288,639.39 is: 398,326.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,637.29 : 679,847.03 = 288,639.39 : x
  2. Step 2: Convert to fraction form
    492,637.29/679,847.03 = 288,639.39/x
  3. Step 3: Cross multiply
    492,637.29x = 679,847.03 × 288,639.39
  4. Step 4: Simplify right side
    492,637.29x = 196,230,630,589.32
  5. Step 5: Solve for x
    x = 196,230,630,589.32/492,637.29
  6. Step 6: Final answer
    x = 398,326.79

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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.