Home / 645,334.64-890,583.44-354,958.48

Finding the Fourth Proportional to 645,334.64, 890,583.44 and 354,958.48

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Solution

The fourth proportional to 645,334.64, 890,583.44 and 354,958.48 is: 489,854.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,334.64 : 890,583.44 = 354,958.48 : x
  2. Step 2: Convert to fraction form
    645,334.64/890,583.44 = 354,958.48/x
  3. Step 3: Cross multiply
    645,334.64x = 890,583.44 × 354,958.48
  4. Step 4: Simplify right side
    645,334.64x = 316,120,144,175.57
  5. Step 5: Solve for x
    x = 316,120,144,175.57/645,334.64
  6. Step 6: Final answer
    x = 489,854.60

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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.