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Finding the Fourth Proportional to 554,368.96, 765,025.42 and 312,653.60

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Solution

The fourth proportional to 554,368.96, 765,025.42 and 312,653.60 is: 431,459.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,368.96 : 765,025.42 = 312,653.60 : x
  2. Step 2: Convert to fraction form
    554,368.96/765,025.42 = 312,653.60/x
  3. Step 3: Cross multiply
    554,368.96x = 765,025.42 × 312,653.60
  4. Step 4: Simplify right side
    554,368.96x = 239,187,951,654.51
  5. Step 5: Solve for x
    x = 239,187,951,654.51/554,368.96
  6. Step 6: Final answer
    x = 431,459.86

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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.