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Finding the Fourth Proportional to 487,679.04, 673,047.72 and 280,954.44

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Solution

The fourth proportional to 487,679.04, 673,047.72 and 280,954.44 is: 387,746.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,679.04 : 673,047.72 = 280,954.44 : x
  2. Step 2: Convert to fraction form
    487,679.04/673,047.72 = 280,954.44/x
  3. Step 3: Cross multiply
    487,679.04x = 673,047.72 × 280,954.44
  4. Step 4: Simplify right side
    487,679.04x = 189,095,745,265.88
  5. Step 5: Solve for x
    x = 189,095,745,265.88/487,679.04
  6. Step 6: Final answer
    x = 387,746.30

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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.