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Finding the Fourth Proportional to 495,628.80, 744,026.40 and 492,129.60

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Solution

The fourth proportional to 495,628.80, 744,026.40 and 492,129.60 is: 738,773.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,628.80 : 744,026.40 = 492,129.60 : x
  2. Step 2: Convert to fraction form
    495,628.80/744,026.40 = 492,129.60/x
  3. Step 3: Cross multiply
    495,628.80x = 744,026.40 × 492,129.60
  4. Step 4: Simplify right side
    495,628.80x = 366,157,414,621.44
  5. Step 5: Solve for x
    x = 366,157,414,621.44/495,628.80
  6. Step 6: Final answer
    x = 738,773.48

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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.