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Finding the Fourth Proportional to 495,572.88, 683,868.62 and 280,708.62

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Solution

The fourth proportional to 495,572.88, 683,868.62 and 280,708.62 is: 387,365.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,572.88 : 683,868.62 = 280,708.62 : x
  2. Step 2: Convert to fraction form
    495,572.88/683,868.62 = 280,708.62/x
  3. Step 3: Cross multiply
    495,572.88x = 683,868.62 × 280,708.62
  4. Step 4: Simplify right side
    495,572.88x = 191,967,816,581.50
  5. Step 5: Solve for x
    x = 191,967,816,581.50/495,572.88
  6. Step 6: Final answer
    x = 387,365.46

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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.