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Finding the Fourth Proportional to 442,871,491.40, 664,307,237.10 and 258,449,654.60

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Solution

The fourth proportional to 442,871,491.40, 664,307,237.10 and 258,449,654.60 is: 387,674,481.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,871,491.40 : 664,307,237.10 = 258,449,654.60 : x
  2. Step 2: Convert to fraction form
    442,871,491.40/664,307,237.10 = 258,449,654.60/x
  3. Step 3: Cross multiply
    442,871,491.40x = 664,307,237.10 × 258,449,654.60
  4. Step 4: Simplify right side
    442,871,491.40x = 171,689,975,976,775,296
  5. Step 5: Solve for x
    x = 171,689,975,976,775,296/442,871,491.40
  6. Step 6: Final answer
    x = 387,674,481.90

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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.