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Finding the Fourth Proportional to 484,369.92, 668,528.64 and 283,230.72

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Solution

The fourth proportional to 484,369.92, 668,528.64 and 283,230.72 is: 390,915.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,369.92 : 668,528.64 = 283,230.72 : x
  2. Step 2: Convert to fraction form
    484,369.92/668,528.64 = 283,230.72/x
  3. Step 3: Cross multiply
    484,369.92x = 668,528.64 × 283,230.72
  4. Step 4: Simplify right side
    484,369.92x = 189,347,848,047.82
  5. Step 5: Solve for x
    x = 189,347,848,047.82/484,369.92
  6. Step 6: Final answer
    x = 390,915.79

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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.