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Finding the Fourth Proportional to 495,415.59, 683,689.61 and 280,551.04

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Solution

The fourth proportional to 495,415.59, 683,689.61 and 280,551.04 is: 387,169.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,415.59 : 683,689.61 = 280,551.04 : x
  2. Step 2: Convert to fraction form
    495,415.59/683,689.61 = 280,551.04/x
  3. Step 3: Cross multiply
    495,415.59x = 683,689.61 × 280,551.04
  4. Step 4: Simplify right side
    495,415.59x = 191,809,833,960.60
  5. Step 5: Solve for x
    x = 191,809,833,960.60/495,415.59
  6. Step 6: Final answer
    x = 387,169.55

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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.