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Finding the Fourth Proportional to 493,992.20, 740,988.30 and 488,743.40

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Solution

The fourth proportional to 493,992.20, 740,988.30 and 488,743.40 is: 733,115.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,992.20 : 740,988.30 = 488,743.40 : x
  2. Step 2: Convert to fraction form
    493,992.20/740,988.30 = 488,743.40/x
  3. Step 3: Cross multiply
    493,992.20x = 740,988.30 × 488,743.40
  4. Step 4: Simplify right side
    493,992.20x = 362,153,141,102.22
  5. Step 5: Solve for x
    x = 362,153,141,102.22/493,992.20
  6. Step 6: Final answer
    x = 733,115.10

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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.