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Finding the Fourth Proportional to 484,372.44, 668,582.46 and 312,290.64

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Solution

The fourth proportional to 484,372.44, 668,582.46 and 312,290.64 is: 431,056.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,372.44 : 668,582.46 = 312,290.64 : x
  2. Step 2: Convert to fraction form
    484,372.44/668,582.46 = 312,290.64/x
  3. Step 3: Cross multiply
    484,372.44x = 668,582.46 × 312,290.64
  4. Step 4: Simplify right side
    484,372.44x = 208,792,044,326.17
  5. Step 5: Solve for x
    x = 208,792,044,326.17/484,372.44
  6. Step 6: Final answer
    x = 431,056.82

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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.