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Finding the Fourth Proportional to 554,667.14, 765,374.76 and 312,935.60

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Solution

The fourth proportional to 554,667.14, 765,374.76 and 312,935.60 is: 431,813.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,667.14 : 765,374.76 = 312,935.60 : x
  2. Step 2: Convert to fraction form
    554,667.14/765,374.76 = 312,935.60/x
  3. Step 3: Cross multiply
    554,667.14x = 765,374.76 × 312,935.60
  4. Step 4: Simplify right side
    554,667.14x = 239,513,009,745.46
  5. Step 5: Solve for x
    x = 239,513,009,745.46/554,667.14
  6. Step 6: Final answer
    x = 431,813.95

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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.