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Finding the Fourth Proportional to 480,996.61, 663,486.11 and 317,654.62

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Solution

The fourth proportional to 480,996.61, 663,486.11 and 317,654.62 is: 438,172.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,996.61 : 663,486.11 = 317,654.62 : x
  2. Step 2: Convert to fraction form
    480,996.61/663,486.11 = 317,654.62/x
  3. Step 3: Cross multiply
    480,996.61x = 663,486.11 × 317,654.62
  4. Step 4: Simplify right side
    480,996.61x = 210,759,424,829.90
  5. Step 5: Solve for x
    x = 210,759,424,829.90/480,996.61
  6. Step 6: Final answer
    x = 438,172.38

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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.