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Finding the Fourth Proportional to 495,812.80, 742,844.40 and 308,605.60

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Solution

The fourth proportional to 495,812.80, 742,844.40 and 308,605.60 is: 462,363.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,812.80 : 742,844.40 = 308,605.60 : x
  2. Step 2: Convert to fraction form
    495,812.80/742,844.40 = 308,605.60/x
  3. Step 3: Cross multiply
    495,812.80x = 742,844.40 × 308,605.60
  4. Step 4: Simplify right side
    495,812.80x = 229,245,941,768.64
  5. Step 5: Solve for x
    x = 229,245,941,768.64/495,812.80
  6. Step 6: Final answer
    x = 462,363.90

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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.