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Finding the Fourth Proportional to 554,822.34, 765,654.57 and 313,155.60

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Solution

The fourth proportional to 554,822.34, 765,654.57 and 313,155.60 is: 432,154.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,822.34 : 765,654.57 = 313,155.60 : x
  2. Step 2: Convert to fraction form
    554,822.34/765,654.57 = 313,155.60/x
  3. Step 3: Cross multiply
    554,822.34x = 765,654.57 × 313,155.60
  4. Step 4: Simplify right side
    554,822.34x = 239,769,016,261.09
  5. Step 5: Solve for x
    x = 239,769,016,261.09/554,822.34
  6. Step 6: Final answer
    x = 432,154.58

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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.