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Finding the Fourth Proportional to 553,943.86, 830,322.87 and 395,692.54

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Solution

The fourth proportional to 553,943.86, 830,322.87 and 395,692.54 is: 593,115.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,943.86 : 830,322.87 = 395,692.54 : x
  2. Step 2: Convert to fraction form
    553,943.86/830,322.87 = 395,692.54/x
  3. Step 3: Cross multiply
    553,943.86x = 830,322.87 × 395,692.54
  4. Step 4: Simplify right side
    553,943.86x = 328,552,565,450.39
  5. Step 5: Solve for x
    x = 328,552,565,450.39/553,943.86
  6. Step 6: Final answer
    x = 593,115.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.