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Finding the Fourth Proportional to 647,087.64, 892,981.80 and 360,601.44

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Solution

The fourth proportional to 647,087.64, 892,981.80 and 360,601.44 is: 497,630.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,087.64 : 892,981.80 = 360,601.44 : x
  2. Step 2: Convert to fraction form
    647,087.64/892,981.80 = 360,601.44/x
  3. Step 3: Cross multiply
    647,087.64x = 892,981.80 × 360,601.44
  4. Step 4: Simplify right side
    647,087.64x = 322,010,522,973.79
  5. Step 5: Solve for x
    x = 322,010,522,973.79/647,087.64
  6. Step 6: Final answer
    x = 497,630.46

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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.