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Finding the Fourth Proportional to 495,907.80, 745,416.90 and 486,576.60

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Solution

The fourth proportional to 495,907.80, 745,416.90 and 486,576.60 is: 731,390.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,907.80 : 745,416.90 = 486,576.60 : x
  2. Step 2: Convert to fraction form
    495,907.80/745,416.90 = 486,576.60/x
  3. Step 3: Cross multiply
    495,907.80x = 745,416.90 × 486,576.60
  4. Step 4: Simplify right side
    495,907.80x = 362,702,420,784.54
  5. Step 5: Solve for x
    x = 362,702,420,784.54/495,907.80
  6. Step 6: Final answer
    x = 731,390.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.