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Finding the Fourth Proportional to 480,692.72, 663,413.64 and 279,488.72

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Solution

The fourth proportional to 480,692.72, 663,413.64 and 279,488.72 is: 385,727.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,692.72 : 663,413.64 = 279,488.72 : x
  2. Step 2: Convert to fraction form
    480,692.72/663,413.64 = 279,488.72/x
  3. Step 3: Cross multiply
    480,692.72x = 663,413.64 × 279,488.72
  4. Step 4: Simplify right side
    480,692.72x = 185,416,629,074.14
  5. Step 5: Solve for x
    x = 185,416,629,074.14/480,692.72
  6. Step 6: Final answer
    x = 385,727.97

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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.