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Finding the Fourth Proportional to 467,679.84, 645,513.60 and 286,358.88

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Solution

The fourth proportional to 467,679.84, 645,513.60 and 286,358.88 is: 395,245.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,679.84 : 645,513.60 = 286,358.88 : x
  2. Step 2: Convert to fraction form
    467,679.84/645,513.60 = 286,358.88/x
  3. Step 3: Cross multiply
    467,679.84x = 645,513.60 × 286,358.88
  4. Step 4: Simplify right side
    467,679.84x = 184,848,551,520.77
  5. Step 5: Solve for x
    x = 184,848,551,520.77/467,679.84
  6. Step 6: Final answer
    x = 395,245.93

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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.