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Finding the Fourth Proportional to 641,980.60, 962,968.62 and 192,699.52

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Solution

The fourth proportional to 641,980.60, 962,968.62 and 192,699.52 is: 289,048.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,980.60 : 962,968.62 = 192,699.52 : x
  2. Step 2: Convert to fraction form
    641,980.60/962,968.62 = 192,699.52/x
  3. Step 3: Cross multiply
    641,980.60x = 962,968.62 × 192,699.52
  4. Step 4: Simplify right side
    641,980.60x = 185,563,590,849.06
  5. Step 5: Solve for x
    x = 185,563,590,849.06/641,980.60
  6. Step 6: Final answer
    x = 289,048.60

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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.