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Finding the Fourth Proportional to 495,790.39, 683,938.92 and 323,809.12

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Solution

The fourth proportional to 495,790.39, 683,938.92 and 323,809.12 is: 446,692.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,790.39 : 683,938.92 = 323,809.12 : x
  2. Step 2: Convert to fraction form
    495,790.39/683,938.92 = 323,809.12/x
  3. Step 3: Cross multiply
    495,790.39x = 683,938.92 × 323,809.12
  4. Step 4: Simplify right side
    495,790.39x = 221,465,657,232.44
  5. Step 5: Solve for x
    x = 221,465,657,232.44/495,790.39
  6. Step 6: Final answer
    x = 446,692.11

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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.