Home / 492,324.90-679,635-288,347.46

Finding the Fourth Proportional to 492,324.90, 679,635 and 288,347.46

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Solution

The fourth proportional to 492,324.90, 679,635 and 288,347.46 is: 398,052.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,324.90 : 679,635 = 288,347.46 : x
  2. Step 2: Convert to fraction form
    492,324.90/679,635 = 288,347.46/x
  3. Step 3: Cross multiply
    492,324.90x = 679,635 × 288,347.46
  4. Step 4: Simplify right side
    492,324.90x = 195,971,025,977.10
  5. Step 5: Solve for x
    x = 195,971,025,977.10/492,324.90
  6. Step 6: Final answer
    x = 398,052.23

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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.