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Finding the Fourth Proportional to 493,984.80, 740,979.04 and 120,007.80

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Solution

The fourth proportional to 493,984.80, 740,979.04 and 120,007.80 is: 180,012.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,984.80 : 740,979.04 = 120,007.80 : x
  2. Step 2: Convert to fraction form
    493,984.80/740,979.04 = 120,007.80/x
  3. Step 3: Cross multiply
    493,984.80x = 740,979.04 × 120,007.80
  4. Step 4: Simplify right side
    493,984.80x = 88,923,264,436.51
  5. Step 5: Solve for x
    x = 88,923,264,436.51/493,984.80
  6. Step 6: Final answer
    x = 180,012.15

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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.