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Finding the Fourth Proportional to 484,702.74, 668,788.26 and 280,741.28

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Solution

The fourth proportional to 484,702.74, 668,788.26 and 280,741.28 is: 387,364.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,702.74 : 668,788.26 = 280,741.28 : x
  2. Step 2: Convert to fraction form
    484,702.74/668,788.26 = 280,741.28/x
  3. Step 3: Cross multiply
    484,702.74x = 668,788.26 × 280,741.28
  4. Step 4: Simplify right side
    484,702.74x = 187,756,472,161.37
  5. Step 5: Solve for x
    x = 187,756,472,161.37/484,702.74
  6. Step 6: Final answer
    x = 387,364.17

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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.