Home / 492,638.04-679,848.06-288,640.14

Finding the Fourth Proportional to 492,638.04, 679,848.06 and 288,640.14

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Solution

The fourth proportional to 492,638.04, 679,848.06 and 288,640.14 is: 398,327.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,638.04 : 679,848.06 = 288,640.14 : x
  2. Step 2: Convert to fraction form
    492,638.04/679,848.06 = 288,640.14/x
  3. Step 3: Cross multiply
    492,638.04x = 679,848.06 × 288,640.14
  4. Step 4: Simplify right side
    492,638.04x = 196,231,439,217.13
  5. Step 5: Solve for x
    x = 196,231,439,217.13/492,638.04
  6. Step 6: Final answer
    x = 398,327.83

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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.