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Finding the Fourth Proportional to 424,375,968.40, 636,563,952.60 and 404,287,498.60

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Solution

The fourth proportional to 424,375,968.40, 636,563,952.60 and 404,287,498.60 is: 606,431,247.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,375,968.40 : 636,563,952.60 = 404,287,498.60 : x
  2. Step 2: Convert to fraction form
    424,375,968.40/636,563,952.60 = 404,287,498.60/x
  3. Step 3: Cross multiply
    424,375,968.40x = 636,563,952.60 × 404,287,498.60
  4. Step 4: Simplify right side
    424,375,968.40x = 257,354,848,095,582,976
  5. Step 5: Solve for x
    x = 257,354,848,095,582,976/424,375,968.40
  6. Step 6: Final answer
    x = 606,431,247.90

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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.