Home / 492,637.42-679,847.20-288,639.52

Finding the Fourth Proportional to 492,637.42, 679,847.20 and 288,639.52

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Solution

The fourth proportional to 492,637.42, 679,847.20 and 288,639.52 is: 398,326.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,637.42 : 679,847.20 = 288,639.52 : x
  2. Step 2: Convert to fraction form
    492,637.42/679,847.20 = 288,639.52/x
  3. Step 3: Cross multiply
    492,637.42x = 679,847.20 × 288,639.52
  4. Step 4: Simplify right side
    492,637.42x = 196,230,766,082.11
  5. Step 5: Solve for x
    x = 196,230,766,082.11/492,637.42
  6. Step 6: Final answer
    x = 398,326.96

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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.