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Finding the Fourth Proportional to 586,919.64, 879,591.06 and 320,280.60

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Solution

The fourth proportional to 586,919.64, 879,591.06 and 320,280.60 is: 479,990.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,919.64 : 879,591.06 = 320,280.60 : x
  2. Step 2: Convert to fraction form
    586,919.64/879,591.06 = 320,280.60/x
  3. Step 3: Cross multiply
    586,919.64x = 879,591.06 × 320,280.60
  4. Step 4: Simplify right side
    586,919.64x = 281,715,952,451.44
  5. Step 5: Solve for x
    x = 281,715,952,451.44/586,919.64
  6. Step 6: Final answer
    x = 479,990.67

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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.