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Finding the Fourth Proportional to 553,493.59, 763,822.54 and 320,965.60

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Solution

The fourth proportional to 553,493.59, 763,822.54 and 320,965.60 is: 442,933.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,493.59 : 763,822.54 = 320,965.60 : x
  2. Step 2: Convert to fraction form
    553,493.59/763,822.54 = 320,965.60/x
  3. Step 3: Cross multiply
    553,493.59x = 763,822.54 × 320,965.60
  4. Step 4: Simplify right side
    553,493.59x = 245,160,758,149.64
  5. Step 5: Solve for x
    x = 245,160,758,149.64/553,493.59
  6. Step 6: Final answer
    x = 442,933.33

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