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Finding the Fourth Proportional to 495,623.65, 683,994.48 and 280,765.48

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Solution

The fourth proportional to 495,623.65, 683,994.48 and 280,765.48 is: 387,475.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,623.65 : 683,994.48 = 280,765.48 : x
  2. Step 2: Convert to fraction form
    495,623.65/683,994.48 = 280,765.48/x
  3. Step 3: Cross multiply
    495,623.65x = 683,994.48 × 280,765.48
  4. Step 4: Simplify right side
    495,623.65x = 192,042,038,494.55
  5. Step 5: Solve for x
    x = 192,042,038,494.55/495,623.65
  6. Step 6: Final answer
    x = 387,475.53

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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.