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Finding the Fourth Proportional to 425,628,900.45, 638,443,350.68 and 425,628,900.45

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Solution

The fourth proportional to 425,628,900.45, 638,443,350.68 and 425,628,900.45 is: 638,443,350.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,628,900.45 : 638,443,350.68 = 425,628,900.45 : x
  2. Step 2: Convert to fraction form
    425,628,900.45/638,443,350.68 = 425,628,900.45/x
  3. Step 3: Cross multiply
    425,628,900.45x = 638,443,350.68 × 425,628,900.45
  4. Step 4: Simplify right side
    425,628,900.45x = 271,739,941,347,413,984
  5. Step 5: Solve for x
    x = 271,739,941,347,413,984/425,628,900.45
  6. Step 6: Final answer
    x = 638,443,350.68

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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.