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Finding the Fourth Proportional to 554,979.48, 765,873.61 and 300,330.60

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Solution

The fourth proportional to 554,979.48, 765,873.61 and 300,330.60 is: 414,457.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,979.48 : 765,873.61 = 300,330.60 : x
  2. Step 2: Convert to fraction form
    554,979.48/765,873.61 = 300,330.60/x
  3. Step 3: Cross multiply
    554,979.48x = 765,873.61 × 300,330.60
  4. Step 4: Simplify right side
    554,979.48x = 230,015,280,815.47
  5. Step 5: Solve for x
    x = 230,015,280,815.47/554,979.48
  6. Step 6: Final answer
    x = 414,457.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.