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Finding the Fourth Proportional to 495,434.00, 683,676.05 and 280,575.60

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Solution

The fourth proportional to 495,434.00, 683,676.05 and 280,575.60 is: 387,181.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,434.00 : 683,676.05 = 280,575.60 : x
  2. Step 2: Convert to fraction form
    495,434.00/683,676.05 = 280,575.60/x
  3. Step 3: Cross multiply
    495,434.00x = 683,676.05 × 280,575.60
  4. Step 4: Simplify right side
    495,434.00x = 191,822,816,531.50
  5. Step 5: Solve for x
    x = 191,822,816,531.50/495,434.00
  6. Step 6: Final answer
    x = 387,181.38

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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.