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Finding the Fourth Proportional to 484,455.20, 668,413.90 and 290,812.64

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Solution

The fourth proportional to 484,455.20, 668,413.90 and 290,812.64 is: 401,240.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,455.20 : 668,413.90 = 290,812.64 : x
  2. Step 2: Convert to fraction form
    484,455.20/668,413.90 = 290,812.64/x
  3. Step 3: Cross multiply
    484,455.20x = 668,413.90 × 290,812.64
  4. Step 4: Simplify right side
    484,455.20x = 194,383,210,871.70
  5. Step 5: Solve for x
    x = 194,383,210,871.70/484,455.20
  6. Step 6: Final answer
    x = 401,240.84

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1.5x scale

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.